User the busybee

24 votes

Was the ZX Spectrum used for serious number crunching?

answered Dec 10, 2022 at 18:14

15 votes

How does the Gameboy Link Cable work?

answered Oct 19, 2019 at 19:49

13 votes

Did any PC software floating point use non-IEEE format?

answered Mar 25, 2022 at 7:24

13 votes

Accepted

Did any processor ISA have a "reversed accumulator" architecture?

answered Oct 28 at 7:08

12 votes

Were there any games/software that used a resolution or resolution-mode higher than what was advertised available on the machine?

answered Nov 17, 2019 at 18:24

10 votes

Accepted

about flag changes in 16-bit calculations on the MC6800

answered Aug 28, 2024 at 7:57

8 votes

What is the purpose of the M1 pin on a Z80

answered Jun 25, 2024 at 6:15

7 votes

Did any RISC CPU ever take more than one clock cycle per instruction?

answered Jan 26, 2020 at 10:44

6 votes

What are some tracing disassemblers for the Z80

answered Apr 18, 2024 at 6:21

5 votes

Towards people who were there, what programs did you use to develop applications for the IBM 5150?

answered Oct 21, 2022 at 7:57

4 votes

On an ISA bus, is data read on the falling or rising edge of /IORD?

answered Apr 23, 2023 at 14:26

4 votes

Z88DK ZX Spectrum "%f" printf not working

answered Feb 25, 2020 at 15:18

3 votes

Did type-in-programs or type-in-listings teach programming in the 70s and 80s or was it just tedious typing of the source code?

answered Jul 19, 2023 at 18:51

3 votes

When and where was the ‘dotted sequence of integers’ version numbering scheme invented?

answered Aug 14, 2022 at 14:03

2 votes

What would be the value on the data bus for a Jupiter ACE with the Z80 Interrupt Mode 2?

answered Jul 11, 2021 at 13:30

1 vote

M68k Big Endian to Little Endian

answered May 20, 2021 at 9:13

1 vote

How can a Z80 assembly program find out its own memory address?

answered Feb 12, 2020 at 13:07

1 vote

What early computers were only able to print numbers?

answered Aug 25, 2022 at 6:31

0 votes

Accepted

How to interface with W65C51 UART

answered Jul 20, 2024 at 21:44

0 votes

Can floppy disks have sectors laid out without being formatted?

answered Jan 15 at 7:03

-1 votes

Where was the DOS cdd utility from?

answered Sep 23, 2020 at 16:24

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21 Answers

Was the ZX Spectrum used for serious number crunching?

How does the Gameboy Link Cable work?

Did any PC software floating point use non-IEEE format?

Did any processor ISA have a "reversed accumulator" architecture?

Were there any games/software that used a resolution or resolution-mode higher than what was advertised available on the machine?

about flag changes in 16-bit calculations on the MC6800

What is the purpose of the M1 pin on a Z80

Did any RISC CPU ever take more than one clock cycle per instruction?

What are some tracing disassemblers for the Z80

Towards people who were there, what programs did you use to develop applications for the IBM 5150?

On an ISA bus, is data read on the falling or rising edge of /IORD?

Z88DK ZX Spectrum "%f" printf not working

Did type-in-programs or type-in-listings teach programming in the 70s and 80s or was it just tedious typing of the source code?

When and where was the ‘dotted sequence of integers’ version numbering scheme invented?

What would be the value on the data bus for a Jupiter ACE with the Z80 Interrupt Mode 2?

M68k Big Endian to Little Endian

How can a Z80 assembly program find out its own memory address?

What early computers were only able to print numbers?

How to interface with W65C51 UART

Can floppy disks have sectors laid out without being formatted?

Where was the DOS cdd utility from?