6502 6502 Programming tips and code fragments
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BitManip Copying, clearing, setting and rotating bits
SwapVals Swapping data without temporary variable
Calculating day of week
Day of Week BASIC source and test code
BCD  Converting 8-bit Binary Coded Decimal
PrNumber Printing 8-bit numbers in hex and decimal
Printing 16/24/32-bit numbers in decimal
Decimal printout BASIC source and test code
ScanNumber  Scanning 8-bit numbers
ScanDecNum  Scanning 16/24/32-bit decimal numbers
Decrement  16-bit, 24-bit, 32-bit decrement
Denormal Denormalising floating point numbers
SqRoot  Calculate integer Square Root
StackMem  Subroutines to stack memory
StackWS  Demo of using stack for workspace
60to100  Multiply by 1.66 to convert 1/60ths to 1/100ths
6502Divide  Routines to divide by various constants
CRC-8 Calculating 8-bit CRCs
CRC16  Calculating 16-bit CRCs for XMODEM and Acorn CFS/RFS
CRC32  Calculating 32-bit CRCs for ZIP files
Testing  RAM tester
Calling BBC code
CatchingErrors  Catching errors
Programs and tools
DisAssem  BBC BASIC 6502 disassembler
BBCBasic  BBC BASIC for the 6502

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Last update: 29-Jun-2018