Re: 3174 disks

"[email protected] [hercules-390]" <[email protected]>
Newsgroups gmane.comp.emulators.hercules390.general
Message-ID <[email protected]>
What model is your 3174?

Scott


Sent from my iPhone

> On Jun 28, 2019, at 14:38, Ivan Warren [email protected] [hercules-390] <[email protected]> wrote:
> 
> 
> Le 6/28/2019 à 7:41 PM, Benjamin Huntsman 
> BHuntsman-KAweP20W6/[email protected] [hercules-390] a écrit :
>> 
>> 
>> Hi there!
>> 
>>    I've seen it discussed a few times, but no definitive answers that 
>> I could piece together...
>> 
>>    Has anyone on here successfully read or duplicated a 3174 diskette 
>> on a regular computer?  If so, can you tell me what hardware, drive, 
>> and software you used?
>> 
>> 
> What I managed to do was copy 5494 (5250 terminal controllers to connect 
> to AS/400 systems) and I think they might be of the same era (and may 
> have common components). Making succesful clones was never a problem.
>> 
>>    I'm trying to resurrect my old 3174 and get my 3290 running, and 
>> I'm really hoping to know for sure:
>> 
>> 
>> 1.  What format are the 3174 disks?  I know they're 2.4MB drives, but
>>    are the floppies actually 2.4MB?
>> 
> They probably have a non disclosed format, but the block sizes are 
> probably pretty standard (512 Bytes/block). They are double sided 5.25 
> soft sectored HD (1.2MB per side). Cloning a diskette should be pretty 
> easy.
>> 
>> 1. Will the 3174 read a regular 5.25" floppy?
>> 
> Well one that has been cloned shouldn't be a problem ! Modern boards 
> probably no longer have a diskette controller - but there might be USB 
> controlers hanging around, finding a 5.25 diskette drive could be a 
> challenge as well as the media !
> 
>>    From a historical perspective, does anyone know anything about the 
>> workflow or tools used in how IBM developed the 3174 and it's microcode?
>> 
>> 
> Not me.. Sorry...
> 
> 
> --Ivan
> 
> 
> 
> [Non-text portions of this message have been removed]
> 
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