User cjs

5

26

votes

3

answers

13k

views

What does a Nintendo Game Boy do when turned on without a game cartridge inserted?

game-boy

Jul 22 '19 at 8:19 Kaz 6,601

2

25

votes

3

answers

3k

views

What are uses of the byte after BRK instruction on 6502?

6502 interrupt

Sep 13 at 9:02 Community♦ 1

5

19

votes

1

answer

2k

views

When low-level formatting a floppy, how does one ensure any existing sector markers are overwritten?

floppy-disk

Mar 2 at 13:08 bodgit 253

1

19

votes

1

answer

1k

views

How does the C64 get an accurate TOD clock on 50 Hz power?

commodore-64 power

Nov 13 at 12:32 Raffzahn 103k

1

16

votes

1

answer

1k

views

What's the timeline of Motorola 6800-family CPUs from 1974 to 1979?

6800

Aug 14 at 11:38 cjs 16.1k

2

15

votes

3

answers

1k

views

For how long can you safely stop the clock on an NMOS 6502?

6502 dma

Apr 16 at 15:02 hotpaw2 5,055

1

15

votes

1

answer

2k

views

Why did the Apple IIe use a 2 MHz-rated 6502, even though it ran at only 1 MHz?

apple-ii 6502

Mar 17 at 3:32 cjs 16.1k

2

15

votes

1

answer

636

views

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

commodore-64 memory

Jan 3 at 21:39 Community♦ 1

6

14

votes

3

answers

2k

views

What LISP compilers and interpreters were available for 8-bit machines?

history 8-bit-microcomputers lisp

Sep 21 at 5:59 cjs 16.1k

3

14

votes

3

answers

1k

views

How did the Altair 8800 front panel load the program counter?

altair-8800 front-panel

Sep 1 at 12:18 Community♦ 1

2

14

votes

4

answers

2k

views

Why is the unchangable Nintendo Game Boy logo in the cartridge?

game-boy

Jul 23 '19 at 5:00 Community♦ 1

1

12

votes

5

answers

2k

views

Why isn't the WDC 65816 available in “externally” 16-bit versions?

65816

May 7 at 22:41 Will Hartung 6,182

1

12

votes

1

answer

457

views

How did the Apple 1 video circuit work?

video apple-1

Jan 22 at 5:42 cjs 16.1k

3

12

votes

2

answers

871

views

What are my modern options for loading programs and data files on the Apple IIc?

apple-ii data-transfer

Nov 13 at 1:00 Nick Westgate 5,742

1

12

votes

1

answer

1k

views

On what Apple II and II+ keyboards can the ']' character be generated?

apple-ii keyboards

Oct 9 at 8:36 Community♦ 1

1

11

votes

0

answers

451

views

Why did some MOS 6502 packages have holes in them?

6502 chip

Mar 28 at 9:29 Community♦ 1

11

votes

2

answers

892

views

Did all integrated Commodore PET monitors always use 60 Hz refresh?

commodore crt-monitor commodore-pet

Dec 13 at 2:31 cjs 16.1k

3

10

votes

1

answer

752

views

Why did the C64 use a separate “CAN” +5 V power supply for some chips?

commodore-64 power

Apr 9 at 11:11 Michael Graf 2,994

9

votes

1

answer

313

views

What is the exact bus protocol used by the C64/C128 REU?

commodore-64 commodore-128 dma

Nov 13 at 17:16 Brian H 42k

9

votes

4

answers

629

views

Which cartridges were typically used together on Commodore 64 systems?

commodore-64 game-cartridge

Oct 29 at 16:04 Brian H 42k

1

9

votes

1

answer

2k

views

What was the first LISP compiler?

history compilers lisp

Sep 21 at 5:59 cjs 16.1k

1

9

votes

2

answers

573

views

How do you send code to a Commodore disk drive and run it?

commodore disk-drive

Sep 9 at 13:50 Community♦ 1

9

votes

3

answers

565

views

Why did 1970s front panels prefer momentary toggle switches to push buttons?

front-panel

Sep 8 at 0:11 Community♦ 1

1

8

votes

2

answers

327

views

What are the most common Apple II disk image formats and what hardware disk drive emulators can use them?

apple-ii floppy-disk floppy-drive disk-image

May 1 at 7:23 Community♦ 1

8

votes

1

answer

559

views

Why did the Commodore PET 2001 take so long to ship?

commodore commodore-pet

Apr 13 at 14:11 Brian H 42k

1

8

votes

3

answers

405

views

Were any Apple 1s sold with non-ROR 6502s?

mos-650x apple-1

Apr 10 at 16:17 Community♦ 1

8

votes

4

answers

1k

views

What was the earliest microcomputer Logo language implementation?

programming logo-language

Jan 16 at 20:28 Community♦ 1

1

8

votes

3

answers

579

views

Are there any open-source C64 DOS wedges and fast loaders?

commodore-64 floppy-disk game-cartridge

Jan 14 at 19:25 Community♦ 1

1

8

votes

2

answers

425

views

What's the best way to hook up an external power supply to the Apple IIc without a 7-pin female DIN plug?

apple-ii power

Nov 7 at 9:48 cjs 16.1k

8

votes

1

answer

304

views

What Apple System Monitor/Integer BASIC ROM features were removed in the Applesoft II/Autostart ROM?

apple-ii

Oct 8 at 12:39 cjs 16.1k

Stack Exchange Network

current community

your communities

more stack exchange communities

Next badge

73 Questions

What does a Nintendo Game Boy do when turned on without a game cartridge inserted?

What are uses of the byte after BRK instruction on 6502?

When low-level formatting a floppy, how does one ensure any existing sector markers are overwritten?

How does the C64 get an accurate TOD clock on 50 Hz power?

What's the timeline of Motorola 6800-family CPUs from 1974 to 1979?

For how long can you safely stop the clock on an NMOS 6502?

Why did the Apple IIe use a 2 MHz-rated 6502, even though it ran at only 1 MHz?

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

What LISP compilers and interpreters were available for 8-bit machines?

How did the Altair 8800 front panel load the program counter?

Why is the unchangable Nintendo Game Boy logo in the cartridge?

Why isn't the WDC 65816 available in “externally” 16-bit versions?

How did the Apple 1 video circuit work?

What are my modern options for loading programs and data files on the Apple IIc?

On what Apple II and II+ keyboards can the ']' character be generated?

Why did some MOS 6502 packages have holes in them?

Did all integrated Commodore PET monitors always use 60 Hz refresh?

Why did the C64 use a separate “CAN” +5 V power supply for some chips?

What is the exact bus protocol used by the C64/C128 REU?

Which cartridges were typically used together on Commodore 64 systems?

What was the first LISP compiler?

How do you send code to a Commodore disk drive and run it?

Why did 1970s front panels prefer momentary toggle switches to push buttons?

What are the most common Apple II disk image formats and what hardware disk drive emulators can use them?

Why did the Commodore PET 2001 take so long to ship?

Were any Apple 1s sold with non-ROR 6502s?

What was the earliest microcomputer Logo language implementation?

Are there any open-source C64 DOS wedges and fast loaders?

What's the best way to hook up an external power supply to the Apple IIc without a 7-pin female DIN plug?

What Apple System Monitor/Integer BASIC ROM features were removed in the Applesoft II/Autostart ROM?