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Instruction timing diagram
2016-03-16
05:57
Hypnosis
Registered: Mar 2015
Posts: 36
Instruction timing diagram
I'm looking for a diagram with all instructions and their internal timing. I need to know at which cycle the memory reads and writes happen. All my searches end up finding trivial diagrams with only total cycles for each instruction.
2016-03-16
06:12
Flavioweb
Registered: Nov 2011
Posts: 447
Look here:
http://unusedino.de/ec64/technical/aay/c64/
2016-03-16
06:56
Frantic
Registered: Mar 2003
Posts: 1627
AAY doesn't contain info on internal timing, does it?
Is this what you're looking for?
https://codebase64.org/doku.php?id=base:6510_instruction_timing
EDIT: Sorry.. obviously there was some info about this in AAY as well:
http://unusedino.de/ec64/technical/aay/c64/addridx.htm
2016-03-16
07:38
Flavioweb
Registered: Nov 2011
Posts: 447
Yep...
And for each opcode you can click directly on the "addressing type link" to see how it work.
2016-03-16
10:15
Hypnosis
Registered: Mar 2015
Posts: 36
Aaaah. Thanks a lot!
2016-03-16
12:02
MagerValp
Registered: Dec 2001
Posts: 1055
http://users.telenet.be/kim1-6502/6502/hwman.html#AA
http://vice-emu.sourceforge.net/plain/64doc.txt
Cycle exact IRQ/NMI behavior might also be of interest:
http://visual6502.org/wiki/index.php?title=6502_BRK_and_B_bit
http://visual6502.org/wiki/index.php?title=6502_Timing_of_Inter..
http://wiki.nesdev.com/w/index.php/CPU_interrupts
http://www.pagetable.com/?p=410
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