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George Phillips
  • Member for 6 years
  • Last seen this week
97 votes
Accepted

Fixing obscure 8080 emulator bug?

90 votes
Accepted

Where did the popularity of the `i` variable come from?

60 votes
Accepted

What is the origin of this bizarre advert of people wearing swimsuits in a room with computer hardware?

55 votes
Accepted

How did the Z80 instruction set differ from the 8080?

38 votes

How did Woz write the Apple 1 BASIC before building the computer?

30 votes
Accepted

What is the relationship between solid-state ROM and inaccessible content in arcade games?

29 votes
Accepted

What exactly is a cycle-accurate emulator?

25 votes

Strange math syntax in old basic listing

20 votes

Variances in Basic highest line numbers

19 votes
Accepted

Ratio of code density between 8080 and Z80

15 votes
Accepted

Measuring frame length on the ZX Spectrum

14 votes
Accepted

What kind of software was used to develop Nintendo 64 titles?

13 votes
Accepted

Is NitrOS-9/OS-9 a preemptive multitasking environment?

13 votes

Did Microsoft BASIC ever use Z80 only instructions?

12 votes
Accepted

z80 CPU User Manual AND P/V Flag

12 votes
Accepted

What did POKE 842,13 on Atari do? (Jamming the Return key)

12 votes

How was polyphony achieved on systems with only one audio channel?

11 votes

How fast is memcpy on the Z80?

11 votes
Accepted

Intel 8080 - Behaviour of the carry bit when comparing a value with 0

9 votes
Accepted

Why did MS BASIC use the line number for FOR loops?

9 votes
Accepted

Was there any indication that video game companies tried to circumvent Game Shark?

8 votes
Accepted

Accelerators for Z80 micros?

8 votes
Accepted

What effect does exiting a FOR/NEXT loop early have on the TRS-80 Color Computer?

8 votes
Accepted

Carry flag in 8080/8085 subtraction

8 votes

Arithmetic operations on multiple words on the PDP-8

7 votes
Accepted

How to use virtual cassettes with Matthew Reed's TRS-80 Model III emulator? (TRS32)

6 votes

Intel 8080 Read/Set Interrupt Mask Instructions

6 votes

How do Z80 Block Transfer instructions work?

6 votes
Accepted

What to check before powering on TRS80 Model III in unknown condition

5 votes

What is known about the internal workings of the Z80?