The TRS-80 Journey Continues
mloewen at cpumagic.scol.pa.us
Thu May 5 17:09:22 CDT 2022
On Thu, 5 May 2022, Bill Gunshannon via cctalk wrote:
> On 5/5/22 13:34, Mike Loewen via cctalk wrote:
>> On Thu, 5 May 2022, Bill Gunshannon via cctalk wrote:
>>> Next step...
>>> Apparently mu original Tandon floppy has bought the farm.
>>> Does anyone know what the jumper setting are for a
>>> TEAC FD-55GFR-149 for the TRS-80 4P?
>>> I tried the usual (like for a DEC RX-33) but that didn't
>>> fly. Every sector fails verify after a format. I am sure
>>> it's a jumper thing.
>> The FD-55GFR is a 1.2MB drive, double-sided. The Model 4P used 360K
>> drives (possibly Teac FD-55A), single-sided as installed at the factory.
>> Are you sure that's the model number that was in your 4P?
> I know it wasn't. The original was a Tandon 50. But the TEAC
> FD-55GFR (in various flavors) was used in a lot of systems and
> at least one website said they were used in the 4P. It is an
> extremely configurable drive that I have used for numerous DEC
> systems (even the infamous RX50!) I have several of them and
> it should work just fine if I can find the magic jumper combination.
This article talks about settings for the FD-55GFR on page 41:
Mike Loewen mloewen at cpumagic.scol.pa.us
Old Technology http://q7.neurotica.com/Oldtech/
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