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19 votes

Accepted

Under what circumstances would RAM locations 0 and 1 be written and/or read on the C64?

answered Sep 21, 2019 at 8:17

6 votes

Was self-modifying code possible using BASIC?

answered Jun 8, 2019 at 19:29

28 votes

Why does the 6502 have the BIT instruction?

answered May 25, 2019 at 20:55

5 votes

Why do the i8080 I/O instructions take a byte-sized operand to determine the port?

answered May 20, 2019 at 7:13

21 votes

Accepted

How can I implement the modulus operator in Commodore 64 Basic?

answered Mar 27, 2019 at 6:59

6 votes

Why does Sinclair BASIC have two formats for storing numbers in the same structure?

answered Jan 20, 2019 at 13:36

15 votes

Accepted

6510 I/O port initialisation

answered Sep 30, 2018 at 14:39

3 votes

What happened to the Apple Device SBC that was supposed to compete with the linux SBCs?

answered Sep 9, 2018 at 5:34

18 votes

What was computer "Fuzzy" logic?

answered Aug 23, 2018 at 10:34

6 votes

How was C ported to architectures that had no hardware stack?

answered Aug 6, 2018 at 15:02

12 votes

How were files transferred between different systems in the late 1980s?

answered May 27, 2018 at 12:49

2 votes

Reading data over serial from an old punched tape reader

answered Feb 27, 2018 at 9:18

18 votes

Is DOS being shipped with or as an installed OS?

answered Feb 5, 2018 at 13:54

39 votes

Accepted

C64 BASIC: How to suppress the '?' sign when using the INPUT command?

answered Oct 13, 2017 at 6:38

12 votes

Obscure uses of the Commodore 8050/1541 disk drive

answered Sep 12, 2017 at 9:07

15 votes

Graphics chips in 1980

answered Sep 2, 2017 at 17:37

15 votes

Accepted

Sprites not rendering correctly before $2000

answered Sep 2, 2017 at 9:20

20 votes

Accepted

When does the VIC-II read the sprite data?

answered Jun 27, 2017 at 14:02

Stack Exchange Network

18 Answers

Under what circumstances would RAM locations 0 and 1 be written and/or read on the C64?

Was self-modifying code possible using BASIC?

Why does the 6502 have the BIT instruction?

Why do the i8080 I/O instructions take a byte-sized operand to determine the port?

How can I implement the modulus operator in Commodore 64 Basic?

Why does Sinclair BASIC have two formats for storing numbers in the same structure?

6510 I/O port initialisation

What happened to the Apple Device SBC that was supposed to compete with the linux SBCs?

What was computer "Fuzzy" logic?

How was C ported to architectures that had no hardware stack?

How were files transferred between different systems in the late 1980s?

Reading data over serial from an old punched tape reader

Is DOS being shipped with or as an installed OS?

C64 BASIC: How to suppress the '?' sign when using the INPUT command?

Obscure uses of the Commodore 8050/1541 disk drive

Graphics chips in 1980

Sprites not rendering correctly before $2000

When does the VIC-II read the sprite data?