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20 votes
1 answer
2k views

How can I set up the Microsoft C compiler to make it prefer immediate-mode push instructions?

8 votes
2 answers
975 views

Help understanding TAIPAN source code for the Apple II

17 votes
3 answers
4k views

Does this 1978 code for a 6800 really clear ALL of memory?

8 votes
1 answer
1k views

C64 char screen plot routine - not clear about reason for logical OR

5 votes
1 answer
299 views

Can anyone help me identify what 6803/6303 development tools might have been used to build this program?

6 votes
0 answers
277 views

Sending DOS commands in assembly on my C64

11 votes
2 answers
564 views

IMPI Instruction set: is there any reference?

4 votes
1 answer
227 views

Documentation for the SALUT preprocessor of the IBM Macro Assembler 2.0

15 votes
3 answers
3k views

Difference between machine language and machine code, maybe in the C64 community?

87 votes
9 answers
15k views

Why is the processor instruction called "move", not "copy"?

5 votes
0 answers
343 views

Did the Soviets need industrial espionage to get IBM software pre-1970?

12 votes
2 answers
1k views

Floppy drive detection on an IBM PC 5150 by PC/MS-DOS

41 votes
12 answers
8k views

When did assembly source code begin to be written in lowercase?

48 votes
4 answers
7k views

Why are first four x86 General Purpose Registers named in such unintuitive order?

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