Microsoft BASIC for 6502 Microprocessor - Version 1.1 , complete source code for Microsoft BASIC Version 1.1 for the 6502 microprocessor, originally developed and copyrighted by Microsoft in 1976-1978.
https://github.com/microsoft/BASIC-M6502/blob/main/m6502.asm
#asm #sourcecode #git #basic #history #it #assemblercode #m6502
#appleii #6502asm #assemblercode #codeart
https://mmphosis.netlify.app/onecycle/
Back in 2017, I had an idea to push the limits of Apple II emulators. The idea is run code that is on the floating bus. Well not quite as it runs the code that was just on the bus, hopefully. The test fills the GR and HGR screen with $4C bytes and then will JMP $C056.
#appleii #6502asm #assemblercode #codeart
The BRK instruction takes 7 cycles. Here is a test program:
CALL -151
C081 C081
D000<D000.FFFFM
C083 C083
FFFE:10 0 A9 51 AC 50 C0 45 A 85 3 0 1 0 2 0 3 0 40 4C 2 0
FFFEG
It works on a real Apple II+ with a 16K RAM card and in AppleWin.
carostar
Sikorski Arkadiusz
mmphosis