57f029bc6e
cpu - best effort implementation of haltbug
2023-08-30 21:47:38 +02:00
c1ba944fc9
cpu/decoder - RETI enables interrupts without delay
2023-08-30 21:35:57 +02:00
7574c9f709
cpu/decoder - Remove superfluous include mem_device.h
2023-08-30 18:34:22 +02:00
175a24c77d
cpu/decoder - define opcode class with methods
...
Instead of doing the same bit operations on the opcode everywhere, and
possibly botching it in the process, we create a datatype which has
methods return often used values extracted from the opcode.
2023-08-30 18:27:53 +02:00
ef9bda4a30
cpu/decoder - Little conversion fix for ADD SP, e8
2023-08-30 13:43:10 +02:00
53daaeba6b
cpu/decoder - Remove more extraneous brackets
2023-08-30 13:41:35 +02:00
a8edf40b96
cpu/decoder - Unify code for ALU n ops
2023-08-30 13:41:15 +02:00
9bc6f935ac
cpu/decoder - Fix comment
2023-08-30 13:40:50 +02:00
77bd32114a
cpu/decoder - Join code for INC rr and DEC rr
2023-08-30 13:34:14 +02:00
e45704e2ab
cpu/decoder - Reduct empty lines
2023-08-30 13:27:04 +02:00
dbd42c4573
cpu/decoder - Remove extraneous brackets
2023-08-30 13:26:35 +02:00
87b939c80e
cpu/decoder - add function with shared code for 16-bit addition
2023-08-30 13:20:57 +02:00
3d244d1ec0
cpu/decoder - Implement DAA
...
This is a best effort implementation, possible quirks of the actual
hardware have not been considered.
2023-08-30 12:56:00 +02:00
2d4daf821e
cpu/decoder - Add missing breaks
2023-08-30 12:32:38 +02:00
7d1d20becf
cpu/decoder - Fix comment
2023-08-30 00:36:20 +02:00
efc6762068
cpu/decoder - Remove extaneous code of instruction already implemented elsewhere
2023-08-30 00:25:49 +02:00
aec3c7b0e6
cpu - Fix build errors
2023-08-30 00:01:45 +02:00
c4a9a10e09
cpu/decoder - Treat undefined opcodes as NOP
2023-08-29 23:59:32 +02:00
c90788d330
cpu/decoder - Implement STOP n8
2023-08-29 23:47:18 +02:00
4e506a4d3c
cpu/decoder - Implement LD HL, SP + e8
2023-08-29 23:46:09 +02:00
7180ae8c40
cpu/decoder - Implement HALT
2023-08-29 23:32:11 +02:00
eb0e591b25
Move panic.h to misc
2023-08-29 23:15:00 +02:00
ef2615c1a7
cpu/decoder - Fix build errors
2023-08-29 23:13:23 +02:00
517577d546
Improve consistency for including
2023-08-29 23:11:31 +02:00
c39a680293
cpu/decoder - Fix IME state for RETI
2023-08-29 23:06:50 +02:00
28bc389644
cpu/decoder - Reset carry flag for PREFIX SWAP instruction
2023-08-29 23:06:28 +02:00
b6f0f4416f
cpu/decoder - Implement ADD SP, e8
2023-08-29 23:06:05 +02:00
41c4038d0a
cpu/decoder - Implement ADD HL, rr
2023-08-29 23:05:55 +02:00
8f1b1eb924
cpu/decoder - Implement INC rr and DEC rr
2023-08-29 23:04:59 +02:00
e893d2b9f5
cpu/decoder - Use variable instead calculating twice
2023-08-29 23:04:31 +02:00
43088a7f99
cpu/decoder - Remove extraneous comments
2023-08-29 21:27:32 +02:00
39e041f473
cpu/decoder - Implement RLCA, RLA, RRCA, RRA
2023-08-29 21:25:19 +02:00
7902ac4641
cpu/decoder - little code improvement
2023-08-29 21:14:19 +02:00
50cac936b9
cpu/decoder - Implement PREFIX (bit shift & bit ops)
2023-08-29 21:00:37 +02:00
8160037ffc
cpu/decoder - Improve code formatting
2023-08-29 19:43:19 +02:00
40b5d1d370
cpu/decoder - Fix decoding of JR e instruction
2023-08-29 19:42:42 +02:00
ddea64ec63
cpu/decoder - Remove unnessary intermediate variable
2023-08-29 16:54:17 +02:00
c08fd5d68d
cpu/decoder - Actually use pushStack16 and popStack16 for POP and PUSH
2023-08-29 16:53:53 +02:00
310fb99ad2
cpu/decoder - Simplify decoding by referencing registers by index
2023-08-29 16:53:20 +02:00
763fe13f5a
decoder - Disable debug printf
2023-08-28 23:08:33 +02:00
bd2b577c6c
decoder - Add parenthesis to bitwise ANDs
...
== has priority over & so a & b == c is parsed as a & (b == c)
2023-08-28 22:31:52 +02:00
505478b840
Improve Cpu class and implement interrupts
2023-08-28 21:56:33 +02:00
e4a6b1f9b4
decoder - Simplify RST command
...
We can calculate the rst address directly from the op code.
2023-08-28 19:39:18 +02:00
ad2334a6af
Implement more parts of decoder
2023-08-27 22:19:02 +02:00
93521e559c
Simplify decoder code somewhat.
2023-08-27 00:15:12 +02:00
ab09bbd9b7
more decoder code
2023-08-26 23:51:51 +02:00
8d063c08ca
Fix build errors.
2023-08-26 21:17:47 +02:00
ba5b55a196
WIP initial state
2023-08-26 19:04:02 +02:00
