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Topic: Commodore 8-bit trivia

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All Forums : [General] : General Trivia > Commodore 8-bit trivia
24 JAN 2003 at 4:54am

MichalN

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Okay, here's a couple of random questions related to Commodore's 8-bit computers. Most of the answers are probably easy to google for but hopefully not all. Let's see what you guys remember from your younger days!

1. Which device bore the "1581" designation?
2. Why were the C64 floppy drives so awfully slow? What made the drives designed for the C128 faster?
3. If you did 'LOAD "FOO",8,1', what did the 8 and the 1 mean?
4. Which other CPU did a C128 sport besides the MOS 6510?
5. Which other popular micros had the same CPU as the C64? Name at least two.
6. Which company supplied the built-in BASIC?
7. Why are the 5.25" C64/C128 floppies not readable in a PC while the 3.5" floppies are (with special software of course)?
8. What was the resolution of so-called "hi-res" mode on the C64? For bonus points, do you know how the image was laid out in memory? The system was pretty crazy.
9. What was the C64 sound chip called and what did the acronym stand for?
10. What was the command to initiate a soft reboot on the C64?
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25 JAN 2003 at 9:10pm

MichalN

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What, no one is willing to admit that they used an 8-bit micro? Or did y'all have those crappy Apples, Amstrads and Ataris, trembling in the shadow of the mighty C= ?

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25 JAN 2003 at 9:45pm

Aya

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i admit i used an 8-bit comp... but it was a speccy!

You have gotten the attention of the mysterious lady. She turns to face you. Her face is devoid of any flesh. You are frozen with horror as she begins ripping your body into a bloody mess.


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25 JAN 2003 at 10:29pm

MichalN

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Originally Posted By Aya_Brea (25 JAN 2003 9:45pm)
i admit i used an 8-bit comp... but it was a speccy!

The crappiest of them all
 You still might know some of the answers...
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25 JAN 2003 at 10:37pm

Aya

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Originally Posted By MichalN (25 JAN 2003 10:29pm)

The crappiest of them all
 You still might know some of the answers...

NO WAY... speccy was THE best!
well ok C64 was better but the CPCs? major crap

perhaps i know an answer or two... i'll check them out again

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26 JAN 2003 at 8:50am

resonate

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Here's the best I can do without cheating in any way. Forgive any errors or mistakes:

1. The second issue of the disk drive, the one most often used with the C128.

2. Backwards compatibility with the Vic20, perhaps? Maybe a bug in the drive controller? I know there are disk turbo utilities around, so I doubt it's anything purely mechanical.

3.  8 is the device number assigned to the first disk drive. Not entirely sure about the ,1 added afterwards, I think it has something to do with loading machine code as well as BASIC in, but I'm not clear on the details.

4. Z80, for use in CP/M mode.

5. The Apple II and.. erm.. some other one that I have no idea what it is.

6. Microsoft, I believe. If it is, (and I suspect), was there anyone aside from Sinclair that didn't use Microsoft's BASIC? I can't think of any.

7. Different formatting, presumably. The C64 drives are single-sided, and the PC drives double-sided, but I don't know if that would make a difference.

8. 320x200 resolution, 2 colours per 8x8 attribute square. I don't know the second part. Programming gives me migraines.

9. SID. Sound Interface Device, or something along those lines.

10. SYS 64738. I'll never forget that one, as typing it in causes your fingers to sort of ripple out across the top of the keyboard. Go on, give it a try. It's as much fun as you'll have typing in a five-digit number. Which, admittedly, isn't actually all that much fun at all.



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26 JAN 2003 at 7:27pm

MichalN

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Cool, resonate! Your memory serves you pretty well. So here are the correct answers (you got most of them right).

1. 1581 was a 3.5" floppy drive, 800KB capacity.
2. Poor design. The data was transferred serially, bit by bit, with "software" timing signals. C128 had "burst mode" which used HW timing and was considerably faster.
3. 8 was typically the first disk device. The 1 meant the program would be loaded at an address specified at the start of the file.
4. Z80 for CP/M use.
5. Apple II, Atari 800/130, probably others.
6. Microsoft. They pretty much had a monopoly on BASIC.
7. The 5.25" drives use GCR encoding (versus MFM in PCs). The PC floppy controller is physically unable to read those disks. The 3.5" drives used MFM, just like PCs.
8. 320x200. In memory the image was split into two parts: one bit map determined foreground/background color. Another array held the actual FG/BG colors, one byte per 8x8 block. There were 16 colors (4 bits/color).
9. SID, or Sound Interface Device.
10. SYS64738. I don't remember the number, but I know how to type it
It is unforgettable.
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