User cjs

5

26

votes

3

answers

16k

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 7,116

44

votes

1

answer

5k

views

Where and when did the `0x` convention for hexadecimal literals originate?

history hexadecimal

Aug 20 at 13:37 chicks 299

2

25

votes

3

answers

4k

views

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

6502 interrupt

Sep 13 '19 at 9:02 Community♦ 1

5

19

votes

1

answer

3k

views

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

floppy-disk

Mar 2 '20 at 13:08 bodgit 253

3

18

votes

4

answers

3k

views

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

game-boy

Aug 13 at 1:51 hippietrail 3,337

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 '19 at 5:59 cjs 17.4k

1

14

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 7,735

1

16

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 '20 at 3:32 cjs 17.4k

1

9

votes

1

answer

2k

views

What was the first LISP compiler?

history compilers lisp

Sep 21 '19 at 5:59 cjs 17.4k

1

8

votes

2

answers

2k

views

How does Game Boy / Sharp LR35902 HRAM work?

8080 game-boy microprocessor

Aug 2 '19 at 15:58 Community♦ 1

1

9

votes

2

answers

2k

views

Is the Game Boy Sharp LR35902 object-compatible with the 8080/Z-80?

z80 8080 game-boy

May 4 at 8:00 Community♦ 1

1

19

votes

1

answer

2k

views

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

commodore-64 power

Nov 13 '19 at 12:32 Raffzahn 127k

1

17

votes

1

answer

2k

views

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

6800

Aug 14 '19 at 11:38 cjs 17.4k

1

12

votes

1

answer

1k

views

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

apple-ii keyboards

Oct 9 '19 at 8:36 Community♦ 1

4

15

votes

3

answers

1k

views

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

altair-8800 front-panel

Sep 1 '19 at 12:18 Community♦ 1

2

16

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 5,762

1

7

votes

1

answer

1k

views

Could the Commodore 64 have used the 6522 VIA instead of the 6526 CIA?

commodore-64 mos-6526 mos-6522

Oct 2 '19 at 20:52 Community♦ 1

9

votes

4

answers

1k

views

What was the earliest microcomputer Logo language implementation?

programming logo-language

Jan 16 '20 at 20:28 Community♦ 1

4

votes

1

answer

969

views

How did “RAM” cartridges for the C64 work?

commodore-64 memory

Jan 3 '20 at 21:39 Community♦ 1

3

12

votes

2

answers

941

views

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

apple-ii data-transfer

Nov 13 '19 at 1:00 Nick Westgate 5,852

11

votes

2

answers

930

views

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

commodore crt-monitor commodore-pet

Dec 13 '19 at 2:31 cjs 17.4k

3

10

votes

1

answer

892

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 6,311

2

12

votes

3

answers

868

views

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

commodore disk-drive

Sep 7 at 11:08 OmarL 28.5k

8

votes

3

answers

824

views

What were the first chips with hardware support for SPI?

hardware chip

Aug 2 '19 at 6:23 cjs 17.4k

10

votes

4

answers

821

views

Which cartridges were typically used together on Commodore 64 systems?

commodore-64 game-cartridge

Oct 29 '19 at 16:04 Brian H 46.3k

1

8

votes

3

answers

821

views

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

commodore-64 floppy-disk game-cartridge

Jan 14 '20 at 19:25 Community♦ 1

1

7

votes

0

answers

811

views

Why is the original Altair BASIC (for the 8080 CPU) source code not available on-line?

8080 microsoft-basic altair-8800

Sep 24 at 22:49 Jeffrey Henning 551

10

votes

3

answers

802

views

How was text handled on the Amstrad CPC 464?

text cpc464

Feb 20 at 15:36 Caleb Fuller 21

2

8

votes

2

answers

801

views

What does Shift-RETURN do on Commodore's 8-bit computers?

commodore-64 commodore

Apr 1 at 21:57 Community♦ 1

6

votes

3

answers

789

views

How does the Apple II read lines for video display from the text-mode frame buffer?

apple-ii video

Mar 13 '20 at 16:49 cjs 17.4k

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74 Questions

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

Where and when did the `0x` convention for hexadecimal literals originate?

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?

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

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

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

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

What was the first LISP compiler?

How does Game Boy / Sharp LR35902 HRAM work?

Is the Game Boy Sharp LR35902 object-compatible with the 8080/Z-80?

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?

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

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

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

Could the Commodore 64 have used the 6522 VIA instead of the 6526 CIA?

What was the earliest microcomputer Logo language implementation?

How did “RAM” cartridges for the C64 work?

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

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?

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

What were the first chips with hardware support for SPI?

Which cartridges were typically used together on Commodore 64 systems?

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

Why is the original Altair BASIC (for the 8080 CPU) source code not available on-line?

How was text handled on the Amstrad CPC 464?

What does Shift-RETURN do on Commodore's 8-bit computers?

How does the Apple II read lines for video display from the text-mode frame buffer?