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
c2440ae5fa
Various bug fixes to assembler, added more data pointers.
2026-08-13 23:41:22 -04:00
Anachronaut
e763a3e4de
CPU Core Updates.
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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
d59a91aa38
Removed Duplicate instructions.
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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
2a691ba199
Fixed bugs. 8 bit prime Sieve demo.
2024-11-01 20:53:48 -04:00
Anachronaut
c512f07305
Fixed input bugs.
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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
f4c78e68ba
DP offset instructions, new demo programs.
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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
228cf0593a
Added stuff. Fixed bug.
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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
c64f097810
Added bit shift instructions.
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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.
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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
992e44ca12
CALL and RET instructions.
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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
dfa5ad2638
Assembler Completed
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Added the Assembler.
Added instructions for the assembler to README.md
Added Assembler Manual
Modified Makefile to build the Assembler.
2024-10-26 15:31:24 -04:00
Anachronaut
Anachronaut