User Martin Rosenau

32 votes

Why did the Z80 with 4-bit ALU out-perform the fully 8-bit Intel 8080?

answered Feb 16, 2020 at 16:33

29 votes

Accepted

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

answered Jan 26, 2020 at 11:36

29 votes

Why was the Sega Genesis marketed as a 16-bit console?

answered Jun 3, 2019 at 18:36

19 votes

Why did the TRS-80 CPU have priority over the display?

answered Nov 2, 2021 at 15:02

15 votes

C64 cartridge emulation with ATmega

answered Apr 27, 2019 at 6:11

15 votes

Why is the Intel 8086 CPU called a 16-bit CPU?

answered Jul 18, 2019 at 6:34

12 votes

Accepted

Why did computer video outputs go from digital to analog, then back to digital?

answered Jul 23, 2019 at 6:51

10 votes

Did MS-DOS itself ever use blinking text?

answered Apr 18, 2019 at 6:39

10 votes

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

answered May 11, 2019 at 11:02

9 votes

8080 vs. 8086 - Are 16 Bit CPUs bloaty by nature?

answered Jan 6, 2020 at 21:54

9 votes

Purpose of turbo switch on systems unable to slow to 4.77 MHz?

answered Mar 17, 2020 at 6:24

7 votes

What is the basic logic behind the setting or ordering of keys in a keyboard?

answered Nov 28, 2018 at 18:23

7 votes

Accepted

What's the purpose of HOLD command in 6502 stack pointer

answered Dec 21, 2018 at 8:29

6 votes

Allocate 64 KiB in Watcom C 16-bit DOS

answered Nov 6, 2018 at 15:08

6 votes

Why didn't the Acorn Archimedes support general purpose co-processors?

answered Jul 6, 2019 at 8:23

5 votes

What did the 'turbo' button actually do?

answered May 20, 2019 at 19:53

5 votes

Are there any known viruses for CP/M?

answered Feb 22, 2019 at 9:08

5 votes

Accepted

How to make Microsoft C for MS-DOS emit an immediate-target far call into the data segment?

answered Mar 25 at 7:11

3 votes

How does a floppy drive identify the first and last sectors and tracks?

answered Jan 15, 2022 at 9:26

3 votes

Why were the PlayStation 2 CPU and GPU initially separate chips?

answered Feb 1, 2020 at 12:44

3 votes

Did terminals (e.g. VT100) require a terminal driver on the host computer?

answered Jan 21, 2019 at 15:36

3 votes

How to image a RLL or MFM hard disk on an XT class PC

answered Jan 28, 2019 at 8:02

3 votes

How big is a mainframe?

answered Jan 28, 2019 at 10:20

3 votes

Accepted

What don't I understand about this LR35902 code?

answered Jan 28, 2019 at 12:01

2 votes

How can I create a pipe for stdin/stdout of command.com (or 4dos.com) in C or a batch file?

answered Apr 8, 2019 at 18:42

2 votes

Accepted

Can Access Fault Exceptions of the MC68040 caused by internal access faults occur in normal situations?

answered Jun 24, 2019 at 20:44

2 votes

Why did IBM System /360 have byte addressable RAM, but didn't have 8 bits registers

answered Jul 8, 2020 at 5:44

2 votes

What 8-bit microcomputer systems multiplexed multiple physical ports on a single controller?

answered Nov 1, 2021 at 19:20

1 vote

Why did CP/M and MS-DOS use the BIOS instead of their own drivers to access hardware?

answered Oct 4, 2020 at 5:59

1 vote

Security Issues with Bootable Games

answered Sep 28, 2018 at 7:30

Stack Exchange Network

31 Answers

Why did the Z80 with 4-bit ALU out-perform the fully 8-bit Intel 8080?

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

Why was the Sega Genesis marketed as a 16-bit console?

Why did the TRS-80 CPU have priority over the display?

C64 cartridge emulation with ATmega

Why is the Intel 8086 CPU called a 16-bit CPU?

Why did computer video outputs go from digital to analog, then back to digital?

Did MS-DOS itself ever use blinking text?

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

8080 vs. 8086 - Are 16 Bit CPUs bloaty by nature?

Purpose of turbo switch on systems unable to slow to 4.77 MHz?

What is the basic logic behind the setting or ordering of keys in a keyboard?

What's the purpose of HOLD command in 6502 stack pointer

Allocate 64 KiB in Watcom C 16-bit DOS

Why didn't the Acorn Archimedes support general purpose co-processors?

What did the 'turbo' button actually do?

Are there any known viruses for CP/M?

How to make Microsoft C for MS-DOS emit an immediate-target far call into the data segment?

How does a floppy drive identify the first and last sectors and tracks?

Why were the PlayStation 2 CPU and GPU initially separate chips?

Did terminals (e.g. VT100) require a terminal driver on the host computer?

How to image a RLL or MFM hard disk on an XT class PC

How big is a mainframe?

What don't I understand about this LR35902 code?

How can I create a pipe for stdin/stdout of command.com (or 4dos.com) in C or a batch file?

Can Access Fault Exceptions of the MC68040 caused by internal access faults occur in normal situations?

Why did IBM System /360 have byte addressable RAM, but didn't have 8 bits registers

What 8-bit microcomputer systems multiplexed multiple physical ports on a single controller?

Why did CP/M and MS-DOS use the BIOS instead of their own drivers to access hardware?

Security Issues with Bootable Games