base:6502_6510_coding
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| base:6502_6510_coding [2017-11-16 01:59] – [Illegal opcode tricks] cruzer | base:6502_6510_coding [2023-10-20 07:47] – [Machine-code and Assembly-language] white_flame | ||
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| * [[base: | * [[base: | ||
| * [[base: | * [[base: | ||
| + | * [[TurboAssembler 5.2 (Bacchus Version)]] — This may be useful if you plan to code on the C64 itself. Reference document by Bacchus/ | ||
| + | * [[http:// | ||
| ====== Instruction set and Addressing modes ====== | ====== Instruction set and Addressing modes ====== | ||
| Line 41: | Line 43: | ||
| * [[Extra Instructions Of The 65XX Series CPU]] - Overview article by Adam Vardy from 1995 - quite old by now | * [[Extra Instructions Of The 65XX Series CPU]] - Overview article by Adam Vardy from 1995 - quite old by now | ||
| - | * {{: | + | * {{: |
| ==== Illegal opcode tricks ==== | ==== Illegal opcode tricks ==== | ||
| A collection articles and routines that exemplify particular aspects of some illegal opcode. | A collection articles and routines that exemplify particular aspects of some illegal opcode. | ||
| Line 47: | Line 50: | ||
| * [[Decrease X register by more than 1]] - by FTC/HT | * [[Decrease X register by more than 1]] - by FTC/HT | ||
| * [[Some words about the ANC opcode]] - by FTC/HT | * [[Some words about the ANC opcode]] - by FTC/HT | ||
| - | * [[Use SHY as sty,x or SHX as stx,y]] - by Cruzer/CML | + | * [[Use SHY as sty,x or SHX as stx,y|Store X Indexed by Y and Vice-Versa With SHX/SHY]] - by Cruzer/CML |
| * [[Shift bits and throw carry away with ALR]] - by Cruzer/CML | * [[Shift bits and throw carry away with ALR]] - by Cruzer/CML | ||
| + | |||
| ====== The Addresses 00 and 01 ====== | ====== The Addresses 00 and 01 ====== | ||
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| * [[base: | * [[base: | ||
| * [[Datasette]] | * [[Datasette]] | ||
| - | * [[Unused Bits]] - The upper, unused bits show some unexpected behavior. FIXME | ||
| * [[RAM beneath $00 and $01]] | * [[RAM beneath $00 and $01]] | ||
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| * [[Speeding up and optimising demo routines]] - by conrad | * [[Speeding up and optimising demo routines]] - by conrad | ||
| * [[Speedcode]] by Cruzer/CML | * [[Speedcode]] by Cruzer/CML | ||
| - | * [[Loops vs unrolled]] by Bitbreaker/Oxyron^Nuance | + | * [[Loops vs unrolled]] by Bitbreaker/Performers^Nuance |
| - | * [[Advanced optimizing]] - Tricks to save cycles, including use of illegal opcodes - by Bitbreaker/Oxyron^Nuance | + | * [[Advanced optimizing]] - Tricks to save cycles, including use of illegal opcodes - by Bitbreaker/Performers^Nuance |
| - | * [[Launching long tasks from IRQ handler]] - by Bitbreaker/Oxyron^Nuance | + | * [[Launching long tasks from IRQ handler]] - by Bitbreaker/Performers^Nuance |
| - | * [[Variable speedcode runlength]] - by Bitbreaker/Oxyron* | + | * [[Variable speedcode runlength]] - by Bitbreaker/Performers^Nuance |
| * [[Practical Memory Move Routines]] - by Bruce Clark - taken from [[http:// | * [[Practical Memory Move Routines]] - by Bruce Clark - taken from [[http:// | ||
| * [[Clearing a Section of Memory]] - from 6502 Software Gourmet Guide & Cookbook - taken from [[http:// | * [[Clearing a Section of Memory]] - from 6502 Software Gourmet Guide & Cookbook - taken from [[http:// | ||
base/6502_6510_coding.txt · Last modified: 2023-10-20 08:14 by white_flame