Vintage Computer Festival declared on Wednesday
05 January 2005 11:19 pm:
On Wed, 5 Jan 2005, Pete Turnbull wrote:
Dunno, I don't have quite such old versions
:-) My old copy of "The
MS-DOS Bible" says "every version" -- it means 3.30 and older --
disallows binary reads from devices. The same message is at 5254 in
MS-DOS 3.30 (ditto in PC-DOS 3.30), at 4CA0 in 3.21, and 4CCC in
IBM-DOS 4.01 (from a Compaq). I can't read my MS-DOS 2.10 and 2.11
disks on the hardware I have here. "Binary reads from a device are
not allowed" is the message at 8753 in DR-DOS 3.41.
The question I haven't seen answered yet is, "Well, why the hell
not???"
Well, my guess would be that it has no way to determine the EOF coming
over the line, as it can't just "check the file length", unless
there's
a ^Z there to indicate it. Thus, ASCII mode is needed.
And the programmers were not smart enough to figure a way around this
because...why?
--
Sellam Ismail Vintage Computer
Festival
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