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Author SHA1 Message Date
eiowlta
3180f39514
Merge branch 'fox32-arch:main' into main 2023-07-23 14:37:31 +03:00
eiowlta
5bc6be0a70 single byte operands for bit functions, register pointer offsets 2023-07-21 18:00:07 +03:00
Ry
e9780d0a48 docs: Update cpu.md for new inc/dec instruction behavior 2023-07-20 22:55:20 -07:00
Ry
8dd95f2ffe
Merge pull request #19 from eiowlta/main 
allow target field to be used to increment/decrement by 2, 4 or 8 for inc/dec
 2023-07-20 16:00:16 -07:00
eiowlta
e734528c26 allow dst to be used to increment by 2, 4 or 8 2023-07-20 16:51:37 +03:00
Ry
4bedaa9028 Toggle debug output with F11 2023-07-11 23:02:57 -07:00
Ry
385f879e79
Merge pull request #18 from hyenasky/main 
fix the semantics of the HALT instruction
 2023-06-06 17:14:47 -07:00
hyenasky
6348e233d0 fix the semantics of the HALT instruction 
makes it useful for saving host cpu usage again
 2023-06-06 18:06:55 -06:00
Ry
f98a9a255f Disable serial port if building for Windows 2023-05-29 18:52:25 -07:00
Ry
08e7168b1d Use spaces instead of tabs in serial.c 2023-04-01 19:09:36 -07:00
Ry
d559f63c85 Add RTC port for checking if DST is active 2023-03-24 23:42:42 -07:00
Ry
c422bfc271
Merge pull request #17 from hyenasky/main 
fix several edge case interactions involving page faults
 2023-03-14 16:20:08 -07:00
hyenasky
8c4967cb13 fix several edge case interactions between page faults and instruction execution 2023-03-14 08:24:49 -06:00
Ry
7f482a809a Remove extra new line in disk error messages 2023-03-04 17:00:38 -08:00
Ry
0b9d2f61a3
Merge pull request #16 from theverygaming/main 
Improved Makefile
 2023-02-22 01:27:04 -08:00
theverygaming
1d6aa605fb better Makefile 2023-02-22 09:59:59 +01:00
Ry
2235d2f5b1
Merge pull request #15 from theverygaming/main 
Allow build with emscripten
 2023-02-13 17:47:49 -08:00
theverygaming
c4810048c1 emscripten 2023-02-13 10:00:06 +01:00
Ry
86760a65c4
Merge pull request #14 from neuschaefer/dev 
Documentation improvements
 2023-02-05 15:02:49 -08:00
jn
e01514440a docs/instructions.md: Sort instructions into groups 2023-02-05 14:05:00 +01:00
jn
2d43212c04 docs/cpu.md: Add comment about operand order 2023-02-05 13:02:22 +01:00
Ry
8a764627c5
Merge pull request #13 from neuschaefer/dev 
GitHub CI: Run cputest to catch regressions early
 2023-02-02 16:12:01 -08:00
jn
eed6fb97ac GitHub CI: Run cputest to catch regressions early 2023-02-02 17:48:46 +01:00
Ry
ffeb6f6283
Merge pull request #11 from neuschaefer/dev 
Enable input on the serial port
 2023-02-02 01:55:02 -08:00
jn
727dc8e0d2 Enable input on the serial port 2023-02-02 10:49:07 +01:00
Ry
e6af577da5
Merge pull request #10 from neuschaefer/dev 
Refactor physical memory address resolution code
 2023-02-01 15:00:07 -08:00
jn
c739f8ecb3 Refactor physical memory address resolution code 
The physical memory layout is the same whether we use the MMU or not, so
let's implement it only once.
 2023-02-01 23:51:15 +01:00
Ry
ee4b96db4f
Merge pull request #9 from neuschaefer/dev 
docs: Document how the peripherals work
 2023-02-01 13:44:15 -08:00
jn
4467185339 docs: Document how the peripherals work 2023-02-01 20:16:40 +01:00
Ry
7719755a52 Cleanly exit if attempting to open non-existent disk 
Fixes issue #7.
 2023-01-30 14:09:00 -08:00
Ry
157841311d
Merge pull request #8 from neuschaefer/dev 
GitHub CI: Bump actions/checkout to v3
 2023-01-29 17:00:41 -08:00
jn
8f0f6c9afd GitHub CI: Bump actions/checkout to v3 
v2 is deprecated and causes a warning on the Actions page.
 2023-01-29 23:28:18 +01:00
Ry
15cf497b89
Merge pull request #6 from neuschaefer/dev 
Miscellanea
 2023-01-27 15:11:37 -08:00
jn
4758c45171 Fix skipping of CMP instructions 2023-01-27 17:37:10 +01:00
jn
6ddf60fba6 Handle division by zero instead of crashing 2023-01-27 11:33:26 +01:00
jn
1d9de64e5f Print IP and SP in debug mode 2023-01-27 11:33:26 +01:00
Ry
c492194360
Merge pull request #5 from neuschaefer/headless 
Headless Mode
 2023-01-26 17:08:36 -08:00
jn
17f452bacf Add headless mode 2023-01-26 22:24:16 +01:00
jn
c1652c34b0 Initialize VM state and scan arguments before initializing SDL 2023-01-26 22:21:41 +01:00
Ry
d9f03fe1aa
Merge pull request #4 from neuschaefer/help 
fox32: Add --help option
 2023-01-20 15:09:44 -08:00
jn
43bc7e661e fox32: Add --help option 
It's easier to type --help than to remember the options or look at the
source code.
 2023-01-20 16:36:37 +01:00
Ry
4a4d05332b docs: Fix typo 2023-01-13 14:32:38 -08:00
Ry
85c1a87e09 docs: Add iflt and ifgteq to the condition codes list 2023-01-13 14:30:39 -08:00
Ry
6fb4fd884f
Merge pull request #3 from neuschaefer/lowercase 
docs: Spell fox32 in lowercase
 2022-12-31 18:42:47 -08:00
jn
efdf7815e1 docs: Spell fox32 in lowercase 
As requested by @ry755: https://github.com/fox32-arch/fox32/pull/2#issuecomment-1368289018
 2023-01-01 03:29:39 +01:00
Ry
a1d1e34e59
Merge pull request #2 from neuschaefer/doc 
fox32 architecture documentation
 2022-12-31 14:40:54 -08:00
jn
571729dafa docs: Add more documents (but they're unfinished) 2022-12-31 12:56:19 +01:00
jn
c27f3405cd docs: Start a comprehensive CPU architecture document 
With docs/cpu.md, I aim to describe the CPU architecture as fully as
necessary to allow understanding it without having to look into emulator
source code anymore.

This currently leaves encoding.md a bit stranded, because I didn't quire
know how to integrate it into this new document.
 2022-12-31 12:53:57 +01:00
jn
bf38917ee0 Fix number of operands for OP_FLP in instruction info table 
FLP takes a source operand.
 2022-12-31 12:17:29 +01:00
Ry
9b6ac30abf Add new logo to the README 2022-12-28 21:24:04 -08:00