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143 Commits (main)

Author SHA1 Message Date
Ry b7b8099031 Allow `movz` to work properly when targeting memory 2024-02-23 23:45:18 -08:00
eiowlta 5bc6be0a70 single byte operands for bit functions, register pointer offsets 2023-07-21 18:00:07 +03:00
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
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
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
theverygaming c4810048c1 emscripten 2023-02-13 10:00:06 +01:00
jn 727dc8e0d2 Enable input on the serial port 2023-02-02 10:49:07 +01:00
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 7719755a52 Cleanly exit if attempting to open non-existent disk 
Fixes issue #7.
 2023-01-30 14:09:00 -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
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
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
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 14dc43710f Add support for dropping files onto the window to mount them as a disk 2022-12-26 18:22:21 -08:00
Ry 8b5472519e Update comment 2022-12-26 18:02:25 -08:00
Ry 30f76602a7 Add support for cross-compiling for Windows 2022-12-26 17:22:48 -08:00
Ry 3246859ff2 Revert previous commit 2022-12-25 23:38:26 -08:00
Ry acbfa82a18 If `halt`ed, report that the entire tick was completed 2022-12-25 23:24:03 -08:00
Ry 82668e10d3 Fix errors in the RTC implementation of month and year 2022-12-25 22:58:18 -08:00
Ry ea53fb151c Implement the rest of the RTC 2022-12-25 21:45:31 -08:00
Ry eae21dd08b Fix an issue with the mouse held state 2022-12-25 15:34:36 -08:00
Ry 4bb07c3c52 Change SDL include path 2022-11-08 17:14:49 -08:00
Ry 565685776a Add power control port 2022-10-27 22:45:58 -07:00
Ry 3d1dff8495 BRK exceptions should resume *after* the BRK instruction 2022-10-27 19:03:34 -07:00
Ry a0fa0361ae Add disk write support 2022-10-27 16:02:17 -07:00
Ry 9396931592 Better keyboard handling 2022-10-27 16:01:51 -07:00
Ry 4952a4b504 Show CPU core error messages if debug output is enabled 2022-10-27 15:33:38 -07:00
Ry 5b00bcef56 Better argument parsing 2022-10-27 15:30:50 -07:00
Ry e402e96cfa Build Linux binaries of each commit 2022-10-26 18:49:26 -07:00
Ry 3608796e88 Fix a few formatting things 2022-10-26 18:03:00 -07:00
Ry 23478340d2 Use absolute mouse position instead of grabbing the cursor 2022-10-26 18:03:00 -07:00
hyenasky 072cb452e1 make writes to readonly pages cause a page fault correctly 2022-10-26 18:03:00 -07:00
hyenasky 7d383cff3c add int instruction, make cross-page accesses work 2022-10-26 18:03:00 -07:00
Ry b06f6de79c Implement a somewhat hacky MMU 2022-10-26 18:03:00 -07:00
Ry 8f0c4e6c51 Add docs, add exception handling, rearrange some instrs 2022-10-26 18:03:00 -07:00
Ry 847e476d76 Rename key_t to keycode_t 2022-10-26 18:03:00 -07:00
Ry 29f0fb96e6 Implement keyboard, bump rom version to 0.5.1 
Co-authored-by: Lua MacDougall <lua@foxgirl.dev>
 2022-10-26 18:02:50 -07:00
Ry 7004b61606 Implement disk controller 2022-10-26 18:02:50 -07:00
Ry 2e9d1be053 Implement mouse support 2022-10-23 17:18:05 -07:00
Ry 7aeb636392 Read the correct byte for the overlay alpha channel 2022-10-23 16:51:03 -07:00
Ry 53cbc0d96c Implement overlays 
Co-authored-by: Lua MacDougall <lua@foxgirl.dev>
 2022-10-23 13:16:40 -07:00
Ry 979a8b2cfc Use the correct pixel format 2022-10-22 22:33:03 -07:00