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Re: running CP/M-86 images

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>>>>> Peter Dassow <z80eu@arcor.de> writes:
>>>>> On 17.08.2012 20:12, Ivan Shmakov wrote:

[...]

 >> So, the first question: is floppy.flp a "raw" floppy disk image (as
 >> could be guessed by its size, which is exactly 1440 KiB)?

 > Yes.  But it's track/head order differs from other floppy image
 > formats.

	ACK, thanks.

[...]

 >> --cut: http://en.wikipedia.org/wiki/Boot_sector --
 >> [...] The BIOS merely passes control to whatever exists there, as
 >> long as the sector meets the very simple qualification of having the
 >> boot record signature of 0x55, 0xAA in its last two bytes.  [...]
 >> --cut: http://en.wikipedia.org/wiki/Boot_sector --

 > Wikipedia Bullshit. There is no quality control what is published.

	If there's a reliable source supporting a different point, feel
	free to edit the page accordingly.

	My edition of Norton's "Programmer's guide to the IBM PC & PS/2"
	(1988, translated in 1994) states (Chapter 5, "Boot disks"
	section) that the BIOS indeed checks the boot media signature.

 > That's the proof, CP/M-86 needs no "magic numbers".

	There's no CP/M-86 until the BIOS bootloader passes control to
	it.  Which is unlikely to happen without having the
	aforementioned signature in the first logical sector of the boot
	media.

[...]

 > I don't like QEMU, it's too specific in its intended use.  VMWare has
 > a far better quality and is much more compatible.

	Given a piece of code which I'm free to study and improve, for
	what reason should I consider surrendering those freedoms and
	use a non-free alternative instead?

 >> Also, I've tried a few images from http://cpm.z80.de/.
 >> Unfortunately, these seem to be in a vendor-specific CopyQM format,
 >> which I know of no utility (beside CopyQM) can support.
 >> Unfortunately, CopyQM fails with "Drive not ready" under
 >> FreeDOS/QEMU for me, and I'm reluctant to try it on some "real"
 >> hardware (with a FDD.)

 > You don't need to expand the compressed CopyQM image because I
 > already saved a decompressed (but not otherwise modified version!)
 > version.

	That's just a single image; there're quite a few more at
	http://cpm.z80.de/.

 > I don't know what you have tried, but it seems to be wrong.  I used
 > CopyQM with VMWare and an installed MS-DOS 7.1 without any problems.

	I'm curious, where can one order a copy of MS-DOS 7.1 nowadays?

-- 
FSF associate member #7257	http://sf-day.org/

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Thread

cpm-86 disk image Philippe <pas.de.spam@ici.fr> - 2012-08-15 18:37 +0200
  Re: cpm-86 disk image Peter Dassow <z80eu@arcor.de> - 2012-08-17 12:37 +0200
    Re: cpm-86 disk image with CBASIC-86 Peter Dassow <z80eu@arcor.de> - 2012-08-17 13:11 +0200
      Re: cpm-86 disk image with CBASIC-86 Philippe <pas.de.spam@ici.fr> - 2012-08-17 18:26 +0200
        Re: cpm-86 disk image with CBASIC-86 Peter Dassow <z80eu@arcor.de> - 2012-08-17 21:04 +0200
      running CP/M-86 images Ivan Shmakov <oneingray@gmail.com> - 2012-08-18 01:12 +0700
        Re: running CP/M-86 images Steve Nickolas <usotsuki@buric.co> - 2012-08-17 20:36 +0200
          Re: running CP/M-86 images Ivan Shmakov <oneingray@gmail.com> - 2012-08-18 02:08 +0700
            Re: running CP/M-86 images Ivan Shmakov <oneingray@gmail.com> - 2012-08-18 02:42 +0700
              network boot: CP/M-86, FreeDOS, GNU/Linux Ivan Shmakov <oneingray@gmail.com> - 2012-08-18 18:46 +0700
                Re: network boot: CP/M-86, FreeDOS, GNU/Linux "Harald Peters" <haj.peters@home.nl> - 2014-04-23 00:25 +0200
            Re: running CP/M-86 images - Yes it runs also with modern real PC hardware Peter Dassow <z80eu@arcor.de> - 2012-08-18 20:25 +0200
              Re: running CP/M-86 images - Yes it runs also with modern real PC hardware Tarkin <tarkin000@gmail.com> - 2012-09-19 11:32 -0700
        Re: running CP/M-86 images Peter Dassow <z80eu@arcor.de> - 2012-08-17 20:58 +0200
          Re: running CP/M-86 images Ivan Shmakov <oneingray@gmail.com> - 2012-08-18 02:23 +0700
            Re: running CP/M-86 images Peter Dassow <z80eu@arcor.de> - 2012-08-17 21:47 +0200
              Re: running CP/M-86 images s_dubrovich@yahoo.com - 2012-08-17 20:43 -0700
              Re: running CP/M-86 images Ivan Shmakov <oneingray@gmail.com> - 2012-08-18 21:50 +0700

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