Re: MS-DOS 3.30 boot on the CBM-II

From: André Fachat <afachat_at_gmx.de>
Date: Sun, 05 Nov 2017 22:59:38 +0100
Message-ID: <15f8e323d10.2813.b4d1f2b66006003a6acd9b1a7b71c3b1@gmx.de>
Am 5. November 2017 10:36:58 PM schrieb Francesco Messineo 
<francesco.messineo@gmail.com>:

> On Sun, Nov 5, 2017 at 10:27 PM, André Fachat <afachat@gmx.de> wrote:
>>
>>
>> Am 5. November 2017 10:10:50 PM schrieb Michał Pleban <lists@michau.name>:
>>
>>> Hello!
>>>
>>> Mia Magnusson wrote:
>>>
>>>> Yeah, for that price you might aswell look into a real GPIB interface
>>>> for PC (one that can let another unit be controller) and run better
>>>> software on the PC to emulate whatever you want.
>>>
>>>
>>> Are there such interfaces? It might be the best solution not only for
>>> this project, bot for interfacing to PET/CBM-II in general.
>>>
>>
>> The problem with the CBM IEEE488 is that it has non-standard timing
>> properties.
>
>
> I didn't know that, so I've always read/wrote successfully to various
> HP instruments with my 3032 and simple basic commands
> (voltmeters, universal counters, signal generators mostly, but also an
> HP-IB clock).
> I hope now everything won't stop working :)

That worked with standard BASIC commands? Wow. Maybe they were fast enough.

IIRC the PET timing resulted in having to load the next byte in advance 
possibly from disk, because not reacting quickly enough to a read request 
results in a timeout.

André



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Received on 2017-11-05 23:00:02

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