Re: Software for MS-DOS 1.25

From: didier derny <didier_at_aida.org>
Date: Fri, 6 Oct 2017 11:34:57 +0200
Message-ID: <0c4e507e-f49c-27f9-68d3-2110b9c609b6@aida.org>
For the programs, perhaps some generic program for ibm pc / compaq  
found on vetusware web sites...

I saw dos 1.25 on commodore 700 but the 8088 card was barely booting 
then crashed...


http://vetusware.com/



Le 06/10/2017 à 11:26, Michał Pleban a écrit :
> ... I meant the colon character ":" of course.
>
> Also, the program sends a character $16 and expects the sender side to
> reply also with $16, only then the transmission can begin.
>
> Regards,
> Michau.
>
> Michał Pleban wrote:
>> Hello!
>>
>> Not quite. The correct format is:
>>
>> * Semicolon character ":"
>> * Two characters encoding one byte in hex, denoting the number of bytes
>> to follow. Can be ether 00 (end of transmission) or 20 (transfer 32
>> bytes). So the file can be only transferred in 32-byte chunks.
>> * 32 hex bytes (data)
>> * One hex byte, a checksum of the 32 data bytes.
>>
>> So it is similar to the Intel HEX format (code 83) except there is no
>> address field, and the number of bytes per line is fixed at 32.
>>
>> Anyway, I can easily write a Perl program to send a file from the PC
>> side. I just need the files to send ;-)
>>
>> Regards,
>> Michau.
>>
>>
>>
>> didier derny wrote:
>>> Hi
>>>
>>> perhaps mos technology format... (check code 81)
>>>
>>> ftp://ftp.dataio.com/main/manuals/unifam/translation%20formats.pdf
>>>
>>> if you need to encode /decode it  I have a source code  (6502 assembler)
>>>
>>>
>>> Le 06/10/2017 à 10:44, Michał Pleban a écrit :
>>>> Hello!
>>>>
>>>> I have dug out my Commodore 710 with the 8088 card and booted MS-DOS
>>>> 1.25 on it. It contains a program named RECV.EXE, which allows receiving
>>>> files over the RS-232 connection. The program is not documented but
>>>> after some debugging it turns out that it uses some simplified version
>>>> of Intel HEX format to transfer the files.
>>>>
>>>> Now, I would like to download some software and try running it to see
>>>> whether it works. But after browsing some software archives I can see
>>>> that most DOS software is available for later versions of MS-DOS. Is
>>>> there any place where I can find applications that would run under
>>>> MS-DOS 1.25?
>>>>
>>>> Regards,
>>>> Michau.
>>>>
>>>>          Message was sent through the cbm-hackers mailing list
>>>        Message was sent through the cbm-hackers mailing list
>>>
>>
>>         Message was sent through the cbm-hackers mailing list
>>
>
>         Message was sent through the cbm-hackers mailing list


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Received on 2017-10-06 10:03:33

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