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removed potentially dangerous tape option

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FeralChild64 committed 2020-08-25 16:24:29 +02:00
1 parent 7bd144d421
commit 55399dab71
10 files changed
+4 -33
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CONFIG.md
-6
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@@ -175,12 +175,6 @@ Enable this option if you are using a tape interface adapter with some audio sig
Enable this option if you are using a tape interface adapter lacking tape motor control (most likely every adapter currently being sold) - this will eliminate the need to quickly press space when the program header information gets displayed. Note: if you are using a cassette player with REM port, and your adapter is connected to this port too, than you do not need this option.
### `CONFIG_TAPE_NO_ERROR_CORRECTION`
Normal tape format contains two copies of each data block - in case some bytes from the first one are damaged, they can be corrected by reading them from the second copy. Enabling this option omits the core to read the second block.
If used with `CONFIG_TAPE_NORMAL`, saves about 125 bytes in KERNAL segment. Not recommended when using real magnetic tapes.
## Multiple SID support
The SID is a sound chip - the original Commodore 64 had one installed. However, mods exists to add more of them for improved sound capabilities. Emulators and FPGA machines typically allow to simulate more than one too. Unfortunately, there is no standard regarding how these additional chips are visible in the processor address space, and there is no sane way to detect it - thus, it has to be configurable.
src/,,config_custom.s
-1
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@@ -60,7 +60,6 @@
#define CONFIG_TAPE_AUTODETECT
// #define CONFIG_TAPE_NO_KEY_SENSE
// #define CONFIG_TAPE_NO_MOTOR_CONTROL
// #define CONFIG_TAPE_NO_ERROR_CORRECTION
// #define CONFIG_RS232_UP2400 // please keep disabled for now
// #define CONFIG_RS232_UP9600 // please keep disabled for now
src/,,config_cx16.s
-1
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@@ -56,7 +56,6 @@
// #define CONFIG_TAPE_AUTODETECT
// #define CONFIG_TAPE_NO_KEY_SENSE
// #define CONFIG_TAPE_NO_MOTOR_CONTROL
// #define CONFIG_TAPE_NO_ERROR_CORRECTION
// Multiple SID support
src/,,config_generic.s
-1
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@@ -54,7 +54,6 @@
#define CONFIG_TAPE_AUTODETECT
// #define CONFIG_TAPE_NO_KEY_SENSE
// #define CONFIG_TAPE_NO_MOTOR_CONTROL
// #define CONFIG_TAPE_NO_ERROR_CORRECTION
// Multiple SID support
src/,,config_mega65.s
-1
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@@ -48,7 +48,6 @@
#define CONFIG_TAPE_AUTODETECT
#define CONFIG_TAPE_NO_KEY_SENSE
#define CONFIG_TAPE_NO_MOTOR_CONTROL
// #define CONFIG_TAPE_NO_ERROR_CORRECTION
// Multiple SID support
src/,,config_testing.s
-1
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@@ -54,7 +54,6 @@
// #define CONFIG_TAPE_AUTODETECT
// #define CONFIG_TAPE_NO_KEY_SENSE
// #define CONFIG_TAPE_NO_MOTOR_CONTROL
#define CONFIG_TAPE_NO_ERROR_CORRECTION
// Multiple SID support
src/,,config_ultimate64.s
-1
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@@ -54,7 +54,6 @@
#define CONFIG_TAPE_AUTODETECT
// #define CONFIG_TAPE_NO_KEY_SENSE
// #define CONFIG_TAPE_NO_MOTOR_CONTROL
// #define CONFIG_TAPE_NO_ERROR_CORRECTION
// Multiple SID support
src/kernal/tape/load_tape_normal.s
+2 -10
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@@ -80,13 +80,9 @@ load_tape_normal_switch_turbo:
!:
#endif
#if CONFIG_TAPE_NO_ERROR_CORRECTION
lda RIPRTY
cmp #$01 // sets Carry if checksum verification fails
#else
jsr load_TAPE1_to_MEMUSS
jsr tape_normal_get_data_2
#endif
#if !CONFIG_TAPE_AUTODETECT
bcs load_tape_normal_header // block load error, try again
#else
@@ -137,13 +133,9 @@ load_tape_normal_payload:
jsr lvs_check_EAL
bne_16 tape_load_error // amount of data read does not match header info
#if CONFIG_TAPE_NO_ERROR_CORRECTION
lda RIPRTY
cmp #$01 // sets Carry if checksum verification fails
#else
jsr lvs_STAL_to_MEMUSS
jsr tape_normal_get_data_2
#endif
bcs_16 tape_load_error
jmp tape_load_success
src/kernal/tape/tape_normal_get_data_1.s
+1 -10
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@@ -21,10 +21,9 @@ tape_normal_get_data_1:
// and pointers for error log and correction mechanism
lda #$00
sta RIPRTY
#if !CONFIG_TAPE_NO_ERROR_CORRECTION
sta PTR2
sta PTR1
#endif
// FALLTROUGH
@@ -44,12 +43,6 @@ tape_normal_get_data_1_loop:
jsr tape_normal_get_byte
bcc tape_normal_get_data_1_loop_byte_OK
#if CONFIG_TAPE_NO_ERROR_CORRECTION
bcs tape_normal_get_data_1_fail
#else
// Problem reading a byte, try to add it to the error log
@@ -71,8 +64,6 @@ tape_normal_get_data_1_loop:
bcc tape_normal_get_data_1_loop_advance
bcs tape_normal_get_data_1_success
#endif
tape_normal_get_data_1_loop_byte_OK:
jsr tape_normal_get_marker
src/kernal/tape/tape_normal_get_data_2.s
+1 -1
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@@ -7,7 +7,7 @@
//
#if CONFIG_TAPE_NORMAL && !CONFIG_TAPE_NO_ERROR_CORRECTION
#if CONFIG_TAPE_NORMAL
tape_normal_get_data_2: