 Paul Gardner-Stephen
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8a4f4928e5
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begin implementing chrin to read from keyboard buffer
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2019-04-20 02:06:31 +09:30 |
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Paul Gardner-Stephen
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f37e32f856
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stuff newly read keys into the keyboard buffer
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2019-04-20 02:02:45 +09:30 |
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Paul Gardner-Stephen
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1e37babbb7
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fix many problems with new keyboard scan routine
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2019-04-20 01:46:21 +09:30 |
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Paul Gardner-Stephen
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054913ed06
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roll another loop up
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2019-04-20 01:04:48 +09:30 |
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Paul Gardner-Stephen
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7bce9d4c26
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remove non-alpha flag handling
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2019-04-20 01:02:56 +09:30 |
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Paul Gardner-Stephen
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3f18fce879
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unroll loop in keyboard scanner
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2019-04-20 01:01:05 +09:30 |
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Paul Gardner-Stephen
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67b2f3fc7d
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refactor keyboard scanner somewhat, and have no variables in ROM(!)
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2019-04-20 00:59:09 +09:30 |
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Paul Gardner-Stephen
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99b06b843e
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initialise keyboard scanner extra variables
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2019-04-20 00:58:52 +09:30 |
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Paul Gardner-Stephen
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cef8ffeb43
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modify keyboard scan routine to return raw matrix codes
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2019-04-20 00:35:20 +09:30 |
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Paul Gardner-Stephen
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5f6cc08a97
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modify keyboard scan routine to extract bucky bits and store in expected variables
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2019-04-20 00:28:18 +09:30 |
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Paul Gardner-Stephen
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dbf865fc6d
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add keyboard scan to IRQ routine
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2019-04-20 00:28:04 +09:30 |
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Paul Gardner-Stephen
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72baf3869a
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begin importing public keyboard scan routine implementation
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2019-04-20 00:12:50 +09:30 |
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Paul Gardner-Stephen
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415d5a94bb
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hide cursor when drawing, minor other fixes
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2019-04-19 23:40:51 +09:30 |
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Paul Gardner-Stephen
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c46a4aa1dd
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get CIA IRQ running.
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2019-04-19 23:26:49 +09:30 |
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Paul Gardner-Stephen
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b551bc7827
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clear interrupt disable flag when starting BASIC
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2019-04-19 23:12:42 +09:30 |
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Paul Gardner-Stephen
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9908c4e62a
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begin implementing IRQ framework
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2019-04-19 23:11:32 +09:30 |
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Paul Gardner-Stephen
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1ca55c8df3
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ignore LF character in CHROUT (BASIC READY prompt tries to display it)
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2019-04-19 23:04:21 +09:30 |
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Paul Gardner-Stephen
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a5183785ea
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make chrin infinte loop until properly implemented
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2019-04-19 23:00:59 +09:30 |
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Paul Gardner-Stephen
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4f7ef73ab7
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fix 32K/38K BASIC RAM space detection
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2019-04-19 23:00:23 +09:30 |
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Paul Gardner-Stephen
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b95cbbb831
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advance line pointer on carriage return
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2019-04-19 23:00:07 +09:30 |
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Paul Gardner-Stephen
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63645c8ef8
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fix bugs with chrout to make work with BASIC
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2019-04-19 22:53:31 +09:30 |
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Paul Gardner-Stephen
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e80df3ff53
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update RAMTAS, MEMBOT and MEMTOP based on http://unusedino.de/ec64/technical/project64/mapping_c64.html
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2019-04-19 21:42:05 +09:30 |
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Paul Gardner-Stephen
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e538bfee0e
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implement CHROUT clear screen.
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2019-04-19 21:20:17 +09:30 |
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Paul Gardner-Stephen
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aeea452967
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fix chrout processing of Y and Z characters
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2019-04-19 21:12:19 +09:30 |
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Paul Gardner-Stephen
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bf4e22b99a
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save X and Y in CHROUT
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2019-04-19 21:11:24 +09:30 |
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Paul Gardner-Stephen
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aab7b98c27
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fix some bugs
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2019-04-19 21:03:53 +09:30 |
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Paul Gardner-Stephen
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85d6c10832
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begin implementing chrout
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2019-04-19 20:55:36 +09:30 |
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Paul Gardner-Stephen
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6bd5778db2
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implement screen clear routines
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2019-04-19 20:42:39 +09:30 |
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Paul Gardner-Stephen
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3ff2419189
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implement main screen clear routine
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2019-04-19 20:30:41 +09:30 |
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Paul Gardner-Stephen
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0605c85169
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ignore # and . files when searching for source files
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2019-04-19 20:29:41 +09:30 |
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Paul Gardner-Stephen
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eef931a567
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initialise key repeat things
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2019-04-19 20:10:58 +09:30 |
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Paul Gardner-Stephen
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2ba66f1d83
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call CINT from reset routine (Compute's Mapping the 64)
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2019-04-19 12:52:32 +09:30 |
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Paul Gardner-Stephen
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96661c1928
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set screen/border colours in CINT
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2019-04-19 12:52:20 +09:30 |
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Paul Gardner-Stephen
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5799c5e5e6
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add some further information about the CHRIN routine
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2019-04-19 12:45:08 +09:30 |
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Paul Gardner-Stephen
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799458a2ad
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begin implementing CINT
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2019-04-19 12:39:00 +09:30 |
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Paul Gardner-Stephen
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4718a33d5a
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more work on RAMTAS routine based on Compute's Mapping the 64
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2019-04-19 12:32:13 +09:30 |
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Paul Gardner-Stephen
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313b945bac
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add further explanation about the method of creating compatible ROMs
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2019-04-19 12:10:11 +09:30 |
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Paul Gardner-Stephen
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0e40f96320
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add list of KERNAL memory address definitions
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2019-04-19 12:01:50 +09:30 |
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Paul Gardner-Stephen
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b09a016a96
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set $00/$01 values in ioinit
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2019-04-19 11:41:40 +09:30 |
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Paul Gardner-Stephen
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0a2d423e25
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add missing label and RTS for no_cartridge
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2019-04-18 23:43:59 +09:30 |
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Paul Gardner-Stephen
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d151be5142
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update reset routine based on c64 prg pp263-269
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2019-04-18 23:43:04 +09:30 |
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Paul Gardner-Stephen
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5c701f8dd0
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add stub routines to unimplemented calls
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2019-04-18 23:31:56 +09:30 |
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Paul Gardner-Stephen
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1370446e79
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jump table entries should be jumps, not addresses
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2019-04-18 23:12:54 +09:30 |
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Paul Gardner-Stephen
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ab1b29565b
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implement functionality of RAMTAS routine as described in C64 Programmer's Reference Guide
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2019-04-18 22:59:35 +09:30 |
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Paul Gardner-Stephen
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e773a014d8
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we are not looking at disassemblies to reverse engineer, so don't have target to download disassembly of C64 KERNAL
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2019-04-18 22:50:32 +09:30 |
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Paul Gardner-Stephen
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bd13cae612
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add targets to build 8KB newkern file and run in VICE
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2019-04-18 22:49:12 +09:30 |
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Paul Gardner-Stephen
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cbda53e12c
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add return stubs to routines called from reset_entry
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2019-04-18 22:30:11 +09:30 |
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Paul Gardner-Stephen
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b9d63e3f36
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begin implementing reset routine
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2019-04-18 22:29:34 +09:30 |
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Paul Gardner-Stephen
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4e35ce391d
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add stubs for various routines defined in KERNAL jump table on pp272-273 of C64 Programmers Reference Guide
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2019-04-18 22:14:39 +09:30 |
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Paul Gardner-Stephen
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c42759f36d
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ignore combined.s when scanning source directory.
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2019-04-18 22:09:26 +09:30 |
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