jake/SplitBit-Emulator
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Author SHA1 Message Date
Anachronaut a842c884e8 Added assembler check for string outside Data Segment. 2026-08-17 20:10:33 -04:00
Anachronaut 9e3425d34b Programs can now pin specific routines to specific vectors in SplitBit assembly. Added snake game. 2026-08-17 19:12:42 -04:00
Anachronaut 08624925fe Interrupt on keypress mode 2026-08-17 16:02:44 -04:00
Anachronaut 91c9d49d1b CosmOS pre-alpha and launchable application versions of old programs. 2026-08-17 15:31:49 -04:00
Anachronaut eff6902bcf Block device peripheral and SBFS file system implemented. 2026-08-16 14:03:29 -04:00
Anachronaut 04dfcd707b Memory controller implemented. 2026-08-15 20:43:53 -04:00
Anachronaut c4b2c27a2d Device table added to IO Port 0xFF. 2026-08-15 01:01:21 -04:00
Anachronaut 6d1966d500 Interrupt system implemented, some new programs. 2026-08-15 00:44:13 -04:00
Anachronaut 638b68b25c Long standing assembler bugs fixed, new path system. Make compatibility update. 2026-08-14 16:53:28 -04:00
Anachronaut 94b3a7af28 New SplitBit programs. 2026-08-13 23:42:55 -04:00
Anachronaut c2440ae5fa Various bug fixes to assembler, added more data pointers. 2026-08-13 23:41:22 -04:00
Anachronaut b50210d127 Fixed use-after-free in Assembler 
Use after free occurred in main() in the case that a program being assembled was longer than the initially allocated intermediate array.
 2026-04-27 16:58:43 -04:00
Anachronaut 49fd342135 Clarified Carry Flag behavior. 2024-11-20 17:54:05 -05:00
Anachronaut 4eedc20b04 Formatting updates. 2024-11-20 17:45:23 -05:00
Anachronaut 3bb42eaba4 Uploaded unfinished libraries. 2024-11-20 14:01:14 -05:00
Anachronaut 5e854ee7f9 Updated test programs. 
Test programs now work correctly with the latest CPU core changes.
 2024-11-20 13:59:40 -05:00
Anachronaut e763a3e4de CPU Core Updates. 
Overflowing/Underflowing A or B with increment or decrement instructions now sets the Carry Flag.
An increment or decrement of A or B that doesn't result in an overflow/underflow now clears the Carry Flag.
Q is no longer saved and restored in subroutine calls, allowing it to be used to return a one byte result.
Documentation updated with more detail.
 2024-11-20 13:57:57 -05:00
Anachronaut bf7beec8ec More Programs 
Added math library WIP.
Added some other stuff.
 2024-11-18 19:38:38 -05:00
Anachronaut fc2955cc21 Fixed typo. 2024-11-18 13:11:07 -05:00
Anachronaut d59a91aa38 Removed Duplicate instructions. 
LDA and LDB are now Data Operations only. Minor reshuffling of instructions.
Fixed typo in the programming manual.
 2024-11-18 13:10:02 -05:00
Anachronaut b1639ca56b Merge pull request #1 from agbrooks/flake 
Add rudimentary flake
 2024-11-01 22:16:18 -04:00
albatross 967a7032b8 Add rudimentary flake 2024-11-01 21:08:54 -05:00
Anachronaut 2a691ba199 Fixed bugs. 8 bit prime Sieve demo. 2024-11-01 20:53:48 -04:00
Anachronaut 30eebbd9df Delete Programs/print.asm 2024-11-01 16:42:38 -04:00
Anachronaut c512f07305 Fixed input bugs. 
Input from stdin now works as expected in the emulator.
New program to demo input from the command line.
 2024-11-01 16:41:25 -04:00
Anachronaut 67eea181b8 Delete Programs/printDigitTest.asm 2024-11-01 12:14:16 -04:00
Anachronaut f1bad6853d Delete Programs/printDecimalTest.asm 2024-11-01 12:14:06 -04:00
Anachronaut f4c78e68ba DP offset instructions, new demo programs. 
Added DPUP and DPDN, which take a one byte operand specifying how far up or down to offset the Data Pointer.
Three Fibonacci generators using the print.asm library.
 - 8 bit values printing in decimal representation.
- 16 bit values printing in hexadecimal representation.
- 32 bit values printing in hexadecimal representation.
 2024-11-01 12:13:13 -04:00
Anachronaut e5241beb51 Update SplitBit Programming Manual.md 2024-10-31 13:30:55 -04:00
Anachronaut 228cf0593a Added stuff. Fixed bug. 
Data Pointer value now properly displayed in debug mode.
Added conditional calls to match conditional branches.
 2024-10-31 13:30:15 -04:00
Anachronaut f8848adf8c Update SplitBit Assembler Manual.md 2024-10-30 21:54:41 -04:00
Anachronaut f0d4a9b0f3 Update SplitBit Assembler Manual.md 2024-10-30 21:50:43 -04:00
Anachronaut 52a44ed094 Update SplitBit Assembler Manual.md 2024-10-30 16:09:26 -04:00
Anachronaut 470327a0d5 Update SplitBit Assembler Manual.md 2024-10-30 16:09:04 -04:00
Anachronaut c64f097810 Added bit shift instructions. 
SHL and SHR treat A and B as a 16 bit circular shift register and rotates them either left or right.
 2024-10-30 16:06:33 -04:00
Anachronaut a58fb3d694 Added new instructions. 
Added CCF - Clear Carry Flag
Added BRC - Branch on Carry Flag
Improved CALL and RET - All registers but status now saved and restored.
 2024-10-29 21:04:03 -04:00
Anachronaut f9308338c4 Update print.asm 2024-10-27 20:55:29 -04:00
Anachronaut 26e6233f8a Update print.asm 2024-10-27 20:54:21 -04:00
Anachronaut 2fc0986ac8 Update printHello.asm 2024-10-27 20:15:15 -04:00
Anachronaut f27b290b44 Update printHello.asm 2024-10-27 20:14:55 -04:00
Anachronaut 91be7eb217 Update print.asm 2024-10-27 19:20:26 -04:00
Anachronaut 992e44ca12 CALL and RET instructions. 
Changed PSHP and POPP into CALL and RET, streamlining their use for subroutine calls.
Updated Assembler and Emulator.
New demonstration programs.
 2024-10-27 19:18:54 -04:00
Anachronaut 78f827e9dc Delete Programs/hello.bin 2024-10-26 15:55:59 -04:00
Anachronaut a17af6eff7 Update Assembler.c 2024-10-26 15:46:09 -04:00
Anachronaut f3dcd2bddf Update SplitBit Programming Manual.md 2024-10-26 15:43:57 -04:00
Anachronaut 3809aed5eb Update README.md 2024-10-26 15:39:31 -04:00
Anachronaut 81b364394c Update README.md 2024-10-26 15:38:20 -04:00
Anachronaut 8485c0e50a Delete Source/utility.h 2024-10-26 15:34:22 -04:00
Anachronaut 7f557c4925 Delete Source/utility.c 2024-10-26 15:34:15 -04:00
Anachronaut fd80fe7345 Delete Source/io.h 2024-10-26 15:34:06 -04:00