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Commit Graph

202 Commits

Author SHA1 Message Date
Peter Evans
df960220ef First crack at lo-res graphics 2018-03-11 23:28:28 -05:00
Peter Evans
87c7aa9249 Add hexdump function for vm_segment 2018-03-09 16:45:20 -06:00
Peter Evans
1ff5d17f19 Add hexdump command 2018-03-09 16:44:53 -06:00
Peter Evans
267171ea4a Change to option_open_file(), allow any file mode 2018-03-09 16:44:20 -06:00
Peter Evans
4d4fbdf79a Switch to vm_di for option variable storage
Things like disk1, disk2, width/height, etc.
2018-03-07 20:25:39 -06:00
Peter Evans
c3b86031bd Add tests for primary, alternate functions 2018-03-07 17:00:11 -06:00
Peter Evans
9f09be93a9 Implement (true? better?) framerate cycle 2018-03-07 16:20:29 -06:00
Peter Evans
136d019f7a Show non-inversed text for Apple //e 2018-03-06 12:41:30 -06:00
Peter Evans
5fa696005d Slash character should be a forward slash 2018-03-06 00:28:52 -06:00
Peter Evans
9562dd19ce Rewrite dd to use phases and half-track steps
Phases will yet be the death of me. THE DEATH OF ME.
2018-03-03 21:29:19 -06:00
Peter Evans
b239cac239 Add dblock command to disassemble blocks of code 2018-03-01 19:31:56 -06:00
Peter Evans
f8bda4ebd3 Remove modify_status() function
Also rewrite tests to use macros
2018-02-28 21:40:52 -06:00
Peter Evans
49199eac84 Rewrite status checks with macros
This also forces the result of operations to be considered purely as
8-bit results in _some_ cases, but not in others. We were missing some
times when an overflow is the expected behavior; because SET_RESULT()
and mos6502_modify_status() use ints, this overflow was not properly
observed.
2018-02-28 21:16:39 -06:00
Peter Evans
edd175c1f9 Add disasm command (toggle disassembly) 2018-02-26 20:52:13 -06:00
Peter Evans
4b4e58089b Add missing function decls 2018-02-26 18:53:59 -06:00
Peter Evans
e50fda62be Add step command 2018-02-25 15:41:37 -06:00
Peter Evans
01f230dc85 Add unbreak command, unbreak_all() function for testing 2018-02-25 14:38:24 -06:00
Peter Evans
588362abee Add prompt; quit command; breakpoints 2018-02-25 14:25:02 -06:00
Peter Evans
09f7152e07 Add writeaddr command 2018-02-24 19:38:04 -06:00
Peter Evans
06bf63ecb2 Add jump debug command 2018-02-24 19:36:02 -06:00
Peter Evans
1be1abc0af Add printaddr, printstate 2018-02-24 18:57:00 -06:00
Peter Evans
ec253905ad Add resume command, finder function, arg parser, execute 2018-02-24 16:30:46 -06:00
Peter Evans
a614c1e5df Add new file, vm_debug.c, and help command for it 2018-02-23 21:58:30 -06:00
Peter Evans
0d1e22a348 Add support for decimal mode ADC/SBC.
This also corrects a bug where SBC set carry incorrectly in binary mode.
2018-02-23 00:46:07 -06:00
Peter Evans
978ad1faaf Formerly "BAD" instructions are now forms of NOPs
But weird forms. In most cases they basically are NOPs, except with
different opcodes. In other cases, we call them NP2 and NP3s, and do so
because they consume 2 or 3 bytes respectively (vs. just 1 with NOP).

We had to teach some arcane magic to the emulator for this to work. We
may want to refactor to decouple the number of bytes consumed from the
address mode.
2018-02-22 14:07:05 -06:00
Peter Evans
90892c32e4 Add TSB (Test and Set Bits) instruction
This commit also moves the TRB code from loadstor to bits, which is
where it should have been all along.
2018-02-22 13:39:48 -06:00
Peter Evans
a4c3d1c4ef Implement the TRB (Test and Reset Bits) instruction 2018-02-22 00:39:33 -06:00
Peter Evans
807362e871 Add STZ instruction (to store zero) 2018-02-22 00:02:57 -06:00
Peter Evans
8e1ab0e950 Add support for PHX, PHY, PLX, PLY
These instructions allow you to push and pull (pop) the X and Y
registers via the stack.
2018-02-21 23:32:57 -06:00
Peter Evans
f9a277e7bc Add new Branch Always instruction 2018-02-21 21:57:21 -06:00
Peter Evans
7b65dc1657 Add new BIM instruction (BIt imMediate mode)
This is not a real instruction in the 65c02 processor; I invented it for
the sole purpose of handling the specialized logic that is performed by
BIT in IMM mode. To be fair--I can imagine this really _was_ implemented
as a "separate" instruction on the chip! But I don't know that for sure.
2018-02-21 21:01:46 -06:00
Peter Evans
61eb880f49 Refactor code to pass image type in 2018-02-21 00:23:12 -06:00
Peter Evans
1091ec6e2a Pass image type into enc_dos; use sector_num instead of a table pointer 2018-02-20 15:36:23 -06:00
Peter Evans
98f640f0d1 Use the proper sector header length (20 bytes) 2018-02-20 14:35:07 -06:00
Peter Evans
508be6458a Pass in sector table for logical-physical orders
We were not encoding data properly, because in DOS 3.3 and ProDOS,
sectors must be interleaved on disk media (whereas in the original image
form, data is laid out in a linear fashion).

This solves a bug where we erroneously encountered a "bad" opcode (a7)
in the program code.
2018-02-19 18:49:37 -06:00
Peter Evans
96e4b5d9d8 Remove JSR WAIT to speed up disk II controller 2018-02-19 00:48:11 -06:00
Peter Evans
c89e855559 Update to use correct encoded sector length 2018-02-18 23:46:18 -06:00
Peter Evans
3223fe6110 Enable disassembly toggle (ALT+D) 2018-02-07 15:24:02 -06:00
Peter Evans
308a1070ae Add paused field, pause execution 2018-02-07 14:44:04 -06:00
Peter Evans
433d9a436f Add pause function, flesh out machine_info 2018-02-07 14:43:20 -06:00
Peter Evans
a84b4c12e9 Treat pause and disasm as toggle functions
This allows us to remove the resume and disasm_off functions. (The
disasm_on function is simply renamed to disasm.)
2018-02-07 14:41:44 -06:00
Peter Evans
360e9243f8 Use the DI container to get machine/cpu/etc 2018-02-07 00:02:20 -06:00
Peter Evans
c35a6cb827 Add VM_OUTPUT DI entry 2018-02-07 00:01:57 -06:00
Peter Evans
09017aa171 Use DI to obtain the reflect struct 2018-02-07 00:01:27 -06:00
Peter Evans
4e0892dc86 Add dependency injection container for vm 2018-02-06 23:24:48 -06:00
Peter Evans
608b2259e5 Break keyboard event logic out into normal/special 2018-02-06 16:29:15 -06:00
Peter Evans
a388cf0158 Add missing param name for reflect struct 2018-02-06 14:26:57 -06:00
Peter Evans
fbee851daf Add apple2 reflect code 2018-02-06 00:30:46 -06:00
Peter Evans
b7f2cabb3e Add new REFLECT macro to allow other code to define funcs 2018-02-05 21:55:13 -06:00
Peter Evans
c1c42834ed Add reflect system to virtual machine 2018-02-05 20:31:05 -06:00