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
Peter Evans
92ee67c8d8
Allow us to signal that we should exit
2018-02-05 00:35:04 -06:00
Peter Evans
72c4111458
Add event system; move event code into vm_event.c
2018-02-05 00:28:22 -06:00
Peter Evans
7212a1041a
Encoded tracks should be longer
2018-02-04 15:41:48 -06:00
Peter Evans
4777886d2d
Add missing decl for phaser
2018-02-04 00:26:01 -06:00
Peter Evans
8009a33bd4
Use int return for error code
2018-02-04 00:06:22 -06:00
Peter Evans
dd2b956b49
Add ERR_INVALID error code
2018-02-04 00:06:04 -06:00
Peter Evans
a970759bec
Add missing extern for the save function
2018-02-03 21:17:54 -06:00
Peter Evans
a6c1564747
Add fwrite function, support for streams and types
2018-02-03 20:50:08 -06:00
Peter Evans
2dd21f1487
Add image type, image segment
2018-02-03 18:10:29 -06:00
Peter Evans
5fc0206ff6
Add defines for track/sector sizes
2018-02-03 00:24:22 -06:00
Peter Evans
5ac2fbdbee
Add new decode functions, flesh out sector code
2018-02-03 00:23:57 -06:00
Peter Evans
fadf5a9782
Add decode...code
2018-02-01 18:41:01 -06:00
Peter Evans
f87f77b806
Add ENC_VOLUME definition
2018-01-31 15:58:57 -06:00
Peter Evans
7ffe2cb527
Add _140K_NIB_ define
2018-01-31 14:28:00 -06:00
Peter Evans
8a53e02f00
Rename to enc.c, add header file
2018-01-31 00:09:07 -06:00
Peter Evans
58e2373a4d
Add locked field to apple2dd struct
2018-01-28 18:06:41 -06:00
Peter Evans
9402eccc04
Add, and use, Apple //e enhanced rom
2018-01-27 19:54:19 -06:00
Peter Evans
9c0e01ecd2
Add drive phases, switches for control and i/o
2018-01-26 19:49:19 -06:00
Peter Evans
f36bba2e83
Add extern for the prepare function
2018-01-24 20:05:19 -06:00
Peter Evans
d581194bbc
Add apple text functions and refactor draw logic for text
2018-01-24 16:11:08 -06:00
Peter Evans
8bbe337643
Move open apple to index 0
2018-01-24 15:05:29 -06:00
Peter Evans
6069ab4d1b
Add inverse font
2018-01-24 14:26:28 -06:00
Peter Evans
775a145480
Rework screen display logic for more efficiency
2018-01-23 14:52:16 -06:00
Peter Evans
945bf23f22
Use correct default status and memory mode
2018-01-21 21:33:12 -06:00
Peter Evans
ecd8a7974a
Add "BAD" instruction to crash when we hit an invalid opcode
2018-01-21 12:48:34 -06:00
Peter Evans
0581ed6b44
Fix stack in several ways
...
1. The stack should descend, not ascend;
2. The stack should be pushed byte for byte; meaning, when pushing P or
A, those should consume one byte, not two;
3. The MSB should be pushed first when doing JSR and BRK, which makes
some sense if you were reading the stack from $0100 - $01FF.
2018-01-21 01:09:42 -06:00
Peter Evans
2f777ce881
Several core changes to status, soft switches
...
Regarding soft switches, we had several we should have been listening
for on both reads and writes, but were only doing so on writes; this is
now fixed.
Regarding statuses, we were incorrectly calculating both carry and
overflow. This should now be fixed, although some quick examinations of
disassembly output suggest there is something else amiss. Debugging will
continue shortly.
2018-01-20 21:01:26 -06:00
Peter Evans
6b160c6ca2
Show the dereferenced value for a given address
2018-01-19 12:18:24 -06:00
