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supercat
  • Member for 8 years, 1 month
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37 votes
9 answers
9k views

When and why did high-level language compilers start targeting assembly language rather than machine code?

12 votes
7 answers
4k views

Did any games or other programs combine disk formats on one side of a disk?

25 votes
2 answers
4k views

Was leaving all xxxxxx11 opcodes unused on the 6502 a deliberate design choice?

12 votes
4 answers
3k views

What prompted Nintendo to use SRAM rather than DRAM for the PPU memory on the Famicom?

15 votes
3 answers
2k views

How are 6502 and 65C02 JMP(abs) processed internally

24 votes
4 answers
2k views

Was the design of MS-BASIC for 6502 based on MS-BASIC for 8080?

10 votes
1 answer
1k views

What kind of printer is shown in the opening title sequence for the movie Desk Set?

8 votes
4 answers
1k views

Was there any particular reason the 6502's LDX#imm and LDY#imm aren't opcodes A8 and AA?

19 votes
7 answers
1k views

Did any microcomputers back in the day accelerate standard-cassette performance

7 votes
3 answers
979 views

Did any computer systems connect "terminals" using "broadcast"-style RF to multiplex video, and some other means of multiplexing keyboards?

19 votes
5 answers
947 views

Did any computers use automatically-operated mechanical storage as electronically-read-addressable memory

13 votes
5 answers
772 views

What computer first facilitated multi-precision arithmetic

8 votes
2 answers
735 views

Did any Apple II games use a "timing resistor"?

7 votes
1 answer
646 views

Which computer first used stored characters (shape selector) and character bit patterns in the same memory

5 votes
3 answers
496 views

Did the Apollo Guidance Computer or other multi-ROM machines subdivide code between ROM chips/modules to facilitate partial updates?

3 votes
2 answers
464 views

Why did the Apple Disk II version 3.3 change the boot protocol?

14 votes
1 answer
463 views

Could suitably-written Apple-I software force bytes into the display shift register, and do modern recreations emulate that?

3 votes
2 answers
435 views

Did any 5.25" floppy drives not based on the Apple Disk II offer quarter-track control

7 votes
1 answer
384 views

Could a double-sided Commodore disk be written to be used as a "flippy" on a 1541, without requiring flipping on a 1571?

7 votes
1 answer
368 views

When was a compiler first used to generate code to be placed in ROM?

4 votes
1 answer
349 views

From what errors could Commodore's tape loader recover

3 votes
1 answer
316 views

Did any 6502-based system with cycle-stealing memory access steal the first available read, rather than asserting READY three cycles early?

2 votes
1 answer
307 views

Motivation for DOS 3.3 using I/O hooks rather than ampersand-hook

5 votes
0 answers
296 views

Were punch-card data-processing systems susceptible to "Bobby Tables"

7 votes
1 answer
231 views

Did any AppleSoft language enhancements patch CHRGOT?

2 votes
0 answers
165 views

Commodore tape drive performance specs

3 votes
0 answers
160 views

Did any DOS 3.3 variants relocate start of BASIC?