added panic screen, added versioning mechanism proposal
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FeralChild64 committed
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@@ -105,25 +105,33 @@ Cause the system to support SIDs in `$D4xx` and `$D5xx` ranges, respectively.
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Each of them needs a couple of bytes in KERNAL segment - but they can share some code, and `$D4xx` range support replaces the standard `$D400` address handling, so exact amount depends on the exact configuration.
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## Software features
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## Eye candy
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### `CONFIG_BANNER_FANCY`
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### `CONFIG_BANNER_SIMPLE`, `CONFIG_BANNER_FANCY`, `CONFIG_BANNER_VARIANT`
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If enabled, prints more colorful startup banner. Eye candy only.
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Select startup banner - either a simple one, or with some colorful elements. `CONFIG_BANNER_VARIANT` heavily depends on the selected hardware target, not all targets support it.
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Needs some space in BASIC segment, varies between targets.
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Richer banners need more BASIC segment, varies between hardware variants.
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### `CONFIG_BANNER_PAL_NTSC`
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If enabled, prints video system on startup banner. Eye candy only.
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Feature needs 3 bytes in BASIC and 23 bytes in KERNAL segment.
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Feature needs some bytes in BASIC (depending on banner type) and about 25 bytes in KERNAL segment.
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## Software features
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### `CONFIG_PANIC_SCREEN`
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If enabled, certain fatal errors will produce a nice bluescreen instead of just resetting the machine.
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Feature needs over 100 bytes in KERNAL segment. If unsure - enable.
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### `CONFIG_DOS_WEDGE`
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If enabled, a simple DOS wedge is available from the direct mode - supports `@<drive_number>`, `@<command>`, `@$`, `@$<params>` and `@` commands.
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Feature needs about 330 bytes in BASIC segment.
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Feature needs about 330 bytes in BASIC segment. If unsure - enable.
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### `CONFIG_BCD_SAFE_INTERRUPTS`
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@@ -2,8 +2,13 @@
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# Source files
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SRCDIR_COMMON = c64/aliases
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SRCDIR_BASIC = $(SRCDIR_COMMON) \
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c64/basic
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c64/basic \
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c64/basic/commands \
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c64/basic/init \
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c64/basic/rom_revision
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SRCDIR_KERNAL = $(SRCDIR_COMMON) \
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c64/kernal \
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c64/kernal/assets \
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@@ -41,10 +41,17 @@
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// #define CONFIG_SID_D5XX
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// Eye candy
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// #define CONFIG_BANNER_SIMPLE
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#define CONFIG_BANNER_FANCY
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// #define CONFIG_BANNER_VARIANT
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#define CONFIG_SHOW_PAL_NTSC
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// Software features
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#define CONFIG_BANNER_FANCY
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#define CONFIG_BANNER_PAL_NTSC
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#define CONFIG_PANIC_SCREEN
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#define CONFIG_DOS_WEDGE
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#define CONFIG_BCD_SAFE_INTERRUPTS
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#define CONFIG_SCNKEY_TWW_CTR // for now has to be enabled
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@@ -41,10 +41,17 @@
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// #define CONFIG_SID_D5XX
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// Eye candy
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// #define CONFIG_BANNER_SIMPLE
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// #define CONFIG_BANNER_FANCY
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#define CONFIG_BANNER_VARIANT
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// #define CONFIG_SHOW_PAL_NTSC
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// Software features
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#define CONFIG_BANNER_FANCY
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#define CONFIG_BANNER_PAL_NTSC
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#define CONFIG_PANIC_SCREEN
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#define CONFIG_DOS_WEDGE
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#define CONFIG_BCD_SAFE_INTERRUPTS
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#define CONFIG_SCNKEY_TWW_CTR // for now has to be enabled
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@@ -41,10 +41,17 @@
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#define CONFIG_SID_D5XX
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// Eye candy
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// #define CONFIG_BANNER_SIMPLE
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#define CONFIG_BANNER_FANCY
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// #define CONFIG_BANNER_VARIANT
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#define CONFIG_SHOW_PAL_NTSC
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// Software features
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#define CONFIG_BANNER_FANCY
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#define CONFIG_BANNER_PAL_NTSC
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#define CONFIG_PANIC_SCREEN
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#define CONFIG_DOS_WEDGE
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#define CONFIG_BCD_SAFE_INTERRUPTS
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#define CONFIG_SCNKEY_TWW_CTR // for now has to be enabled
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@@ -86,6 +86,35 @@
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// Check that startup banner configuration is correct
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{
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.var selected = 0;
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#if CONFIG_BANNER_SIMPLE
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.eval selected++
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#endif
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#if CONFIG_BANNER_FANCY
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.eval selected++
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#endif
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#if CONFIG_BANNER_VARIANT
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.eval selected++
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#endif
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.if (selected != 1) .error "Please select exactly one CONFIG_MEMORY_MODEL_* option"
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#if CONFIG_BANNER_VARIANT && !CONFIG_VARIANT_MEGA_65
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.error "CONFIG_BANNER_VARIANT is not supported for your CONFIG_VARIANT_*"
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#endif
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#if CONFIG_BANNER_VARIANT && CONFIG_VARIANT_MEGA_65 && CONFIG_SHOW_PAL_NTSC
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.error "MEGA65 variant banner does not support showing PAL/NTSC"
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#endif
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}
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// Handle processor configuration
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#if CONFIG_CPU_WDC_65C02 || CONFIG_CPU_CSG_65CE02 || CONFIG_CPU_WDC_65816
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@@ -4,13 +4,16 @@
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//
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// This one is not for optimization - but to encourage proper usage of panic screen
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// These are not exactly for optimization - but to encourage proper usage of panic screen
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//
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.pseudocommand panic code
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{
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// If case no panic screen is used, we can skip providing error codes within Kernal
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#if CONFIG_PANIC_SCREEN || !SEGMENT_KERNAL
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lda code
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jmp (panic_vector)
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#endif
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jmp ($E4B7)
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}
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@@ -1,4 +1,10 @@
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// Error codes for 'panic' pseudocommand
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.const P_ERR_NONE = $00
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.const P_ERR_ROM_MISMATCH = $01 // this value has to be stable as long as possible
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// Kernal error codes - returned in the A register
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// Described in 'Commodore 64 Programmer's Reference Guide', page 306
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@@ -4,17 +4,21 @@
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#import "KERNAL_combined.sym"
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.label panic_vector = KERNAL.panic_vector
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.label rom_revision_kernal = KERNAL.rom_revision_kernal
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#if CONFIG_PANIC_SCREEN
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.label panic = KERNAL.panic
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#endif
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.label hw_entry_reset = KERNAL.hw_entry_reset
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#if CONFIG_DBG_PRINTF
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.label printf = KERNAL.printf
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#endif
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.label plot_set = KERNAL.plot_set
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.label print_hex_byte = KERNAL.print_hex_byte
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.label print_return = KERNAL.print_return
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.label print_space = KERNAL.print_space
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#if CONFIG_BANNER_PAL_NTSC
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#if CONFIG_SHOW_PAL_NTSC
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.label print_pal_ntsc = KERNAL.print_pal_ntsc
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#endif
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@@ -1,17 +1,9 @@
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// BASIC Cold start entry point
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// Compute's Mapping the 64 p211
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basic_cold_start:
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//
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// Continuation of the BASIC cold start routine
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//
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// Before doing anything, check if we have a compatible Kernal
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ldy #(__rom_revision_basic_end - rom_revision_basic - 1)
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!:
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lda rom_revision_basic, y
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cmp rom_revision_kernal, y
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bne basic_cold_start_rom_mismatch
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dey
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bpl !-
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basic_cold_start_internal:
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// Setup vectors at $300
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ldy #$0B
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@@ -42,7 +34,3 @@ basic_cold_start:
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// jump into warm start loop
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jmp basic_warm_start
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basic_cold_start_rom_mismatch:
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panic #$01
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@@ -0,0 +1,22 @@
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// BASIC Cold start entry point
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// Compute's Mapping the 64 p211
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basic_cold_start:
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// Before doing anything, check if we have a compatible BASIC/KERNAL pair
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ldy #(__rom_revision_basic_end - rom_revision_basic - 1)
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!:
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lda rom_revision_basic, y
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cmp rom_revision_kernal, y
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beq !+
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panic #P_ERR_ROM_MISMATCH
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!:
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dey
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bpl !--
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// Remaining part wouldn't fit here
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jmp basic_cold_start_internal
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@@ -0,0 +1,8 @@
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The address of the BASIC cold start routine (see Compute's Mapping the Commodore 64, page 211) is well known, see for example here:
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- https://www.lemon64.com/forum/viewtopic.php?t=70680&sid=3ff66caf7f5fdf2a3c2ff2ee31fc3fd8
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Fixing this routine also has a great advantage for us - since it's address lies in the uppeer ROM region, it's easier to bailout
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when someone tries to use our 'kernal.rom' with the original 'basic.rom'.
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@@ -0,0 +1,21 @@
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//
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// Print out the amount of free bytes - for the startup banner
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//
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initmsg_bytes_free:
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jsr basic_do_new
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sec
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lda MEMSIZ+0
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sbc TXTTAB+0
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tax
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lda MEMSIZ+1
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sbc TXTTAB+1
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jsr print_integer
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// Print rest of the start up message
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ldx #34
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jmp print_packed_message
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@@ -0,0 +1,95 @@
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// Routine is too long to fit in the original location
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initmsg_real:
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#if CONFIG_BANNER_SIMPLE
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lda #<startup_banner
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ldy #>startup_banner
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jsr STROUT
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ldx #$02
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ldy #$02
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jsr plot_set
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lda #<rom_revision_basic_string
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ldy #>rom_revision_basic_string
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jsr STROUT
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ldx #$04
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ldy #$02
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jsr plot_set
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#if CONFIG_SHOW_PAL_NTSC
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jsr print_pal_ntsc
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#endif
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jsr initmsg_bytes_free
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ldx #$07
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ldy #$00
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jmp plot_set
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#elif CONFIG_BANNER_FANCY
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lda #<rainbow_logo
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ldy #>rainbow_logo
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jsr STROUT
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ldx #$01
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ldy #$0A
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jsr plot_set
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lda #<startup_banner
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ldy #>startup_banner
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jsr STROUT
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ldx #$03
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ldy #$0A
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jsr plot_set
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lda #<pre_revision_string
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ldy #>pre_revision_string
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jsr STROUT
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lda #<rom_revision_basic_string
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ldy #>rom_revision_basic_string
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jsr STROUT
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ldx #$05
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ldy #$00
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jsr plot_set
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#if CONFIG_SHOW_PAL_NTSC
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jsr print_pal_ntsc
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#endif
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jsr initmsg_bytes_free
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ldx #$07
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ldy #$00
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jmp plot_set
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#elif CONFIG_BANNER_VARIANT && CONFIG_VARIANT_MEGA_65
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lda #<startup_banner
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ldy #>startup_banner
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jsr STROUT
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lda #<rom_revision_basic_string
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ldy #>rom_revision_basic_string
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jsr STROUT
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ldx #$03
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ldy #$12
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jsr plot_set
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jsr initmsg_bytes_free
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ldx #$05
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ldy #$00
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jmp plot_set
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#endif
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@@ -16,39 +16,33 @@
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}
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startup_banner:
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#if !CONFIG_BANNER_FANCY
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// Simple banner
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#if CONFIG_BANNER_SIMPLE
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.text " "
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BANNER_TEXT()
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.byte $0D, $0D
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.text " "
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.byte $00
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#endif
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#elif CONFIG_BANNER_FANCY
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BANNER_TEXT()
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.byte $00
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#if CONFIG_BANNER_FANCY && !CONFIG_VARIANT_MEGA_65
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rainbow_logo:
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// Fancy banner
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.byte $1C, $12, $A4, $A4, $A4, $A4, $A4, $A4, $A4, $0D
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.byte $9E, $12, $A4, $A4, $A4, $A4, $A4, $A4, $0D
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.byte $1E, $12, $A4, $A4, $A4, $A4, $A4, $0D
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.byte $9F, $12, $A4, $A4, $A4, $A4, $92
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.byte $05, $00
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.byte $1C, $12, $A4, $A4, $A4, $A4, $A4, $A4, $A4, $92, $0D
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.byte $9E, $12, $A4, $A4, $A4, $A4, $A4, $A4, $92, $05, $20
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.text " "
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BANNER_TEXT()
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.byte $0D
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.byte $1E, $12, $A4, $A4, $A4, $A4, $A4, $92, $0D
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.byte $9F, $12, $A4, $A4, $A4, $A4, $92, $20, $05, $20, $20
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.text " "
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pre_revision_string:
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#endif
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.text "RELEASE "
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.byte $00
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#if CONFIG_BANNER_FANCY && CONFIG_VARIANT_MEGA_65
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#elif CONFIG_BANNER_VARIANT && CONFIG_VARIANT_MEGA_65
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// Fancy Mega65 banner - from Retrofan
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.byte $9a, $12, $20, $20, $7f, $a9, $20, $20, $1f, $20, $9a, $20, $20, $20
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@@ -65,7 +59,7 @@ startup_banner:
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.byte $12, $20, $20, $1f, $20, $20, $9a, $20, $20, $1f, $20, $9a, $20, $20, $20, $20
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.byte $1f, $20, $9a, $20, $20, $20, $20, $20, $1f, $20, $9a, $20, $20, $1f, $20, $9a
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.byte $20, $20, $1f, $20, $20, $96, $a3, $a3, $a3, $a3, $1f
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.byte $92, $0D, $0D, $05
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.byte $92, $0D, $0D, $05, $00
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// Original Mega65 banner - supplied by Deft
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// .byte $9A,$12,$A3,$A3,$A3,$A3,$A3,$A3,$DF,$9B,$92,$20,$05,$12,$A0,$A0
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@@ -82,10 +76,6 @@ startup_banner:
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// .byte $A3,$A3,$A3,$A3,$DF,$9A,$92,$7F,$12,$DF,$92,$7F,$9B,$20,$9A,$7F
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// .byte $12,$A0,$A0,$9B,$92,$20,$9A,$7F,$12,$A0,$A0,$9B,$92,$20,$9A,$7F
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// .byte $12,$DF,$92,$7F,$9B,$20,$9A,$20,$9B,"0.2.0.0",$0D
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// .byte $0D,$05,$92
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// .byte $0D,$05,$92,$00
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#endif
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||||
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||||
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||||
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||||
.byte $00 // end of banner
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||||
@@ -1,48 +0,0 @@
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// Routine is too long to fit in the original location
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||||
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initmsg_real:
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// Print startup banner, up to 255 characters
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||||
ldx #$00
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!:
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lda startup_banner, x
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beq !+ // 0 means end of banner
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||||
jsr JCHROUT
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inx
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bne !-
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!:
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// Print ROM revision
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||||
lda #<rom_revision_basic_string
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ldy #>rom_revision_basic_string
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jsr STROUT
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// Print PAL/NTSC, if configured
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||||
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||||
#if CONFIG_BANNER_PAL_NTSC
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||||
jsr print_pal_ntsc
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||||
#endif
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||||
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||||
jsr initmsg_double_return
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||||
jsr print_return
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||||
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||||
// Work out free bytes, display them
|
||||
jsr basic_do_new
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||||
sec
|
||||
lda MEMSIZ+0
|
||||
sbc TXTTAB+0
|
||||
tax
|
||||
lda MEMSIZ+1
|
||||
sbc TXTTAB+1
|
||||
|
||||
jsr print_integer
|
||||
|
||||
// Print rest of the start up message
|
||||
ldx #34
|
||||
jsr print_packed_message
|
||||
|
||||
initmsg_double_return:
|
||||
jsr print_return
|
||||
jmp print_return
|
||||
File renamed without changes.
File renamed without changes.
File renamed without changes.
+4
-4
@@ -14,12 +14,12 @@ rom_revision_basic:
|
||||
|
||||
// $BF52
|
||||
|
||||
.text "OR" // Magic string, after "Open ROMs"
|
||||
.byte CONFIG_ID // Config file ID, might change between revisions
|
||||
.text "OR" // project signature, after "Open ROMs"
|
||||
.byte CONFIG_ID // config file ID, might change between revisions
|
||||
|
||||
rom_revision_basic_string:
|
||||
|
||||
.text "DEVEL SNAPSHOT" // Actual ROM revision string
|
||||
.byte $00
|
||||
.text "(DEVEL SNAPSHOT)" // actual ROM revision string; up to 16 characters
|
||||
.byte $00 // marks the end of string
|
||||
|
||||
__rom_revision_basic_end:
|
||||
@@ -0,0 +1,2 @@
|
||||
|
||||
Special case - we need a constant memory location where we can put an ID and a revision string. According to Compute's Mapping the Commodore 64 (page 213) this area is unused - so a perfect place.
|
||||
@@ -0,0 +1,39 @@
|
||||
|
||||
//
|
||||
// !!! PROPOSAL ONLY !!! PROPOSAL ONLY !!! NOT FOR USING EXTERNALLY YET !!!
|
||||
//
|
||||
//
|
||||
// Do not change! Locations of the following data should be constant - now and forever!
|
||||
//
|
||||
// If you want to integrate Open ROMs support in your emulator, FPGA ccomputer, etc. - this
|
||||
// is the official way to recognize the ROM and it's revision.
|
||||
//
|
||||
|
||||
|
||||
// $E4B7
|
||||
|
||||
// This vector is to be used by non-Kernal ROMs, if they want to
|
||||
// complain about incompatible ROM releases - don't use it directly,
|
||||
// use a 'panic' pseudocommand with error code (will be passed using .A)
|
||||
// #P_ERR_ROM_MISMATCH - it should remain stable even between releases
|
||||
|
||||
#if CONFIG_PANIC_SCREEN
|
||||
.word panic
|
||||
#else
|
||||
.word hw_entry_reset
|
||||
#endif
|
||||
|
||||
|
||||
rom_revision_kernal:
|
||||
|
||||
// $E4B9
|
||||
|
||||
.text "OR" // project signature, after "Open ROMs"
|
||||
.byte CONFIG_ID // config file ID, might change between revisions
|
||||
|
||||
rom_revision_kernal_string:
|
||||
|
||||
.text "(DEVEL SNAPSHOT)" // actual ROM revision string; up to 16 characters
|
||||
.byte $00 // marks the end of string
|
||||
|
||||
__rom_revision_kernal_end:
|
||||
@@ -5,68 +5,74 @@
|
||||
|
||||
// Double underscore prevents labels from being passed to VICE (would confuse monitor)
|
||||
|
||||
.label __MSG_KERNAL_SEARCHING_FOR = __kernal_message_searching_for - __kernal_messages_start
|
||||
.label __MSG_KERNAL_LOADING = __kernal_message_loading - __kernal_messages_start
|
||||
.label __MSG_KERNAL_VERIFYING = __kernal_message_verifying - __kernal_messages_start
|
||||
.label __MSG_KERNAL_SAVING = __kernal_message_saving - __kernal_messages_start
|
||||
.label __MSG_KERNAL_FROM_HEX = __kernal_message_from_hex - __kernal_messages_start
|
||||
.label __MSG_KERNAL_TO_HEX = __kernal_message_to_hex - __kernal_messages_start
|
||||
.label __MSG_KERNAL_SEARCHING_FOR = __msg_kernalsearching_for - __msg_kernal_first
|
||||
.label __MSG_KERNAL_LOADING = __msg_kernalloading - __msg_kernal_first
|
||||
.label __MSG_KERNAL_VERIFYING = __msg_kernalverifying - __msg_kernal_first
|
||||
.label __MSG_KERNAL_SAVING = __msg_kernalsaving - __msg_kernal_first
|
||||
.label __MSG_KERNAL_FROM_HEX = __msg_kernalfrom_hex - __msg_kernal_first
|
||||
.label __MSG_KERNAL_TO_HEX = __msg_kernalto_hex - __msg_kernal_first
|
||||
|
||||
#if CONFIG_BANNER_PAL_NTSC
|
||||
.label __MSG_KERNAL_PAL = __kernal_message_pal - __kernal_messages_start
|
||||
.label __MSG_KERNAL_NTSC = __kernal_message_ntsc - __kernal_messages_start
|
||||
#if CONFIG_SHOW_PAL_NTSC
|
||||
.label __MSG_KERNAL_PAL = __msg_kernalpal - __msg_kernal_first
|
||||
.label __MSG_KERNAL_NTSC = __msg_kernalntsc - __msg_kernal_first
|
||||
#endif
|
||||
|
||||
.label __MSG_KERNAL_PANIC = __kernal_message_panic - __kernal_messages_start
|
||||
.label __MSG_KERNAL_PANIC_VERSION = __kernal_message_panic_version - __kernal_messages_start
|
||||
#if CONFIG_PANIC_SCREEN
|
||||
.label __MSG_KERNAL_PANIC = __msg_kernalpanic - __msg_kernal_first
|
||||
.label __MSG_KERNAL_PANIC_ROM_MISMATCH = __msg_kernalpanic_rom_mismatch - __msg_kernal_first
|
||||
#endif
|
||||
|
||||
|
||||
__kernal_messages_start:
|
||||
__msg_kernal_first:
|
||||
|
||||
__kernal_message_searching_for:
|
||||
__msg_kernalsearching_for:
|
||||
.byte $0D
|
||||
.text "SEARCHING FOR"
|
||||
.byte $80 + $20 // end of string mark + space
|
||||
|
||||
__kernal_message_loading:
|
||||
__msg_kernalloading:
|
||||
.byte $0D
|
||||
.text "LOADIN"
|
||||
.byte $80 + $47 // end of string mark + 'G'
|
||||
|
||||
__kernal_message_verifying:
|
||||
__msg_kernalverifying:
|
||||
.byte $0D
|
||||
.text "VERIFYIN"
|
||||
.byte $80 + $47 // end of string mark + 'G'
|
||||
|
||||
__kernal_message_saving:
|
||||
__msg_kernalsaving:
|
||||
.byte $0D
|
||||
.text "SAVIN"
|
||||
.byte $80 + $47 // end of string mark + 'G'
|
||||
|
||||
__kernal_message_from_hex:
|
||||
__msg_kernalfrom_hex:
|
||||
.text " FROM "
|
||||
.byte $80 + $24 // end of string mark + '$'
|
||||
|
||||
__kernal_message_to_hex:
|
||||
__msg_kernalto_hex:
|
||||
.text " TO "
|
||||
.byte $80 + $24 // end of string mark + '$'
|
||||
|
||||
#if CONFIG_BANNER_PAL_NTSC
|
||||
#if CONFIG_SHOW_PAL_NTSC
|
||||
|
||||
__kernal_message_pal:
|
||||
.text ", PAL"
|
||||
__msg_kernalpal:
|
||||
.text "PAL,"
|
||||
.byte $80 + $20 // end of string mark + space
|
||||
|
||||
__kernal_message_ntsc:
|
||||
.text ", NTSC"
|
||||
__msg_kernalntsc:
|
||||
.text "NTSC,"
|
||||
.byte $80 + $20 // end of string mark + space
|
||||
|
||||
#endif // CONFIG_BANNER_PAL_NTSC
|
||||
#endif // CONFIG_SHOW_PAL_NTSC
|
||||
|
||||
__kernal_message_panic:
|
||||
#if CONFIG_PANIC_SCREEN
|
||||
|
||||
__msg_kernalpanic:
|
||||
.text "KERNAL PANI"
|
||||
.byte $80 + $43 // end of string mark + 'C'
|
||||
|
||||
__kernal_message_panic_version:
|
||||
__msg_kernalpanic_rom_mismatch:
|
||||
.text " - ROM MISMATC"
|
||||
.byte $80 + $48 // end of string mark + 'H'
|
||||
|
||||
#endif // CONFIG_PANIC_SCREEN
|
||||
@@ -5,7 +5,7 @@
|
||||
// - [RG64] C64 Programmer's Reference Guide - page 275 (CHKIN) / 276 (CKOUT)
|
||||
// - [CM64] Compute's Mapping the Commodore 64 - page 229
|
||||
//
|
||||
// CPU registers that has to be preserved (see [RG64]): .Y
|
||||
// CPU registers that has to be preserved (see [RG64]): .Y, possibly .A (XXX - see [CM64], page 213)
|
||||
//
|
||||
|
||||
|
||||
|
||||
+21
-5
@@ -3,19 +3,29 @@
|
||||
// Something terrible happened - show the panic screen
|
||||
//
|
||||
|
||||
// .A = 0 - just panic, no extra message
|
||||
// .A = 1 - ROM version mismatch
|
||||
|
||||
#if CONFIG_PANIC_SCREEN
|
||||
|
||||
panic:
|
||||
|
||||
// Disable interrupts, store error code on stack
|
||||
|
||||
sei
|
||||
pha
|
||||
|
||||
// Reinitialize the hardware
|
||||
|
||||
jsr IOINIT
|
||||
jsr setup_vicii
|
||||
jsr clear_screen
|
||||
|
||||
// XXX disable NMIs
|
||||
// Disable NMIs - our routine checks for NULL vector
|
||||
|
||||
lda #$00
|
||||
sta NMINV+0
|
||||
sta NMINV+1
|
||||
|
||||
// Display KERNAL PANIC message
|
||||
|
||||
ldx #$14
|
||||
ldy #$0E
|
||||
@@ -24,6 +34,8 @@ panic:
|
||||
ldx #__MSG_KERNAL_PANIC
|
||||
jsr print_kernal_message
|
||||
|
||||
// Display error code and message (if known)
|
||||
|
||||
pla
|
||||
beq kernal_panic_infinite_loop
|
||||
pha
|
||||
@@ -37,12 +49,14 @@ panic:
|
||||
jsr print_hex_byte
|
||||
|
||||
pla
|
||||
cmp #$01
|
||||
cmp #P_ERR_ROM_MISMATCH
|
||||
bne kernal_panic_infinite_loop
|
||||
|
||||
ldx #__MSG_KERNAL_PANIC_VERSION
|
||||
ldx #__MSG_KERNAL_PANIC_ROM_MISMATCH
|
||||
jsr print_kernal_message
|
||||
|
||||
// Display some raster effect in the infinitew loop
|
||||
|
||||
kernal_panic_infinite_loop:
|
||||
ldx #$00
|
||||
stx VIC_EXTCOL
|
||||
@@ -59,3 +73,5 @@ kernal_panic_infinite_loop:
|
||||
bne !-
|
||||
|
||||
beq kernal_panic_infinite_loop // branch always
|
||||
|
||||
#endif // CONFIG_PANIC_SCREEN
|
||||
@@ -9,7 +9,7 @@
|
||||
|
||||
print_kernal_message:
|
||||
|
||||
lda __kernal_messages_start, x
|
||||
lda __msg_kernal_first, x
|
||||
bpl !- // 0 marks end of string
|
||||
and #$7F
|
||||
jmp JCHROUT
|
||||
@@ -3,7 +3,7 @@
|
||||
// Print video system on startup banner
|
||||
//
|
||||
|
||||
#if CONFIG_BANNER_PAL_NTSC
|
||||
#if CONFIG_SHOW_PAL_NTSC
|
||||
|
||||
print_pal_ntsc:
|
||||
|
||||
@@ -14,4 +14,4 @@ print_pal_ntsc:
|
||||
!:
|
||||
jmp print_kernal_message
|
||||
|
||||
#endif // CONFIG_BANNER_PAL_NTSC
|
||||
#endif // CONFIG_SHOW_PAL_NTSC
|
||||
@@ -1,34 +0,0 @@
|
||||
|
||||
//
|
||||
// !!! PROPOSAL ONLY !!! PROPOSAL ONLY !!! NOT FOR USING EXTERNALLY YET !!!
|
||||
//
|
||||
//
|
||||
// Do not change! Locations of the following data should be constant - now and forever!
|
||||
//
|
||||
// If you want to integrate Open ROMs support in your emulator, FPGA ccomputer, etc. - this
|
||||
// is the official way to recognize the ROM and it's revision.
|
||||
//
|
||||
|
||||
|
||||
// XXX we need to find a safe address within $E4D3-$FFFF range, we need 20 bytes
|
||||
|
||||
|
||||
panic_vector:
|
||||
|
||||
// This vector is to be used by non-Kernal ROMs, if they want to complain
|
||||
// about incompatible ROM releases - jump via this vector with .A set to 1
|
||||
|
||||
.byte <panic
|
||||
.byte >panic
|
||||
|
||||
rom_revision_kernal:
|
||||
|
||||
.text "OR" // Magic string, after "Open ROMs"
|
||||
.byte CONFIG_ID // Config file ID, might change between revisions
|
||||
|
||||
rom_revision_kernal_string:
|
||||
|
||||
.text "DEVEL SNAPSHOT" // Actual ROM revision string
|
||||
.byte $00
|
||||
|
||||
__rom_revision_kernal_end:
|
||||
Reference in new issue
Block a user