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Running Turbo Pascal 3.0 on Commodore C128 (CP/M mode)

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Uploaded by on Jun 26, 2009

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Science & Technology

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  • What's the drive? Verry speedly. 1571?

  • still have the real thing with cpm disks

  • Still have one, but unfortunately without an floppy disc reader.

  • Nope. That's a disk status/track counter, not an FPS display.  It's part of CP/M Plus on the 128.

  • @shadowboxer777 This is a native C128 CP/M feature!

    ".com" lol

  • @redrumloa: It's my understanding that the Z80 still runs slower - possibly via waitstates - when the VIC-II is enabled. To quote wikipedia:

    From the source code of the C128 CP/M implementation, it is clear that the engineers originally planned to make it possible to run CP/M in the "fast" mode as well, with the 40-column output turned off and the Z80 running at an effective 4 MHz; however, this feature did not correctly function on the first generation C128 hardware.

  • @localhbci

    You are partially correct. There are simple modifications to make CP/M faster on the 128, like turning off the VIC-II. CP/M runs on the built in Z80 CPU, which there is no slow/fast mode for though like the native 8502 CPU.

  • @joecassara

    Actually I thought the disk access in this video looked rather *slow* compared to a real 128 with 1571 or 1581.

  • CP/M on the 128 was pretty quick on a 1571 or 1581. Especially if you had the small program that turned off the VIC-II and shifted the machine into fast mode (which it doesn't seem like this video uses).

  • That's not my question. I'm asking him if he's running the emulated CPU faster than 100%.

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