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No, the 'Hosiden' connector is for an external 4869 5-1/4" diskette drive: https://www.ardent-tool.com/8573/Common.html#ESD_Port

The trailing 'G' on IBM terminals is for enhanced graphics capabilities...

An excellent update...

Wow - That is cool! The "Multistation" reference might be closer than '3270', although the 52xx model numbering and twinax connection(s, and the ability to set an address) suggest it is a terminal for an IBM mid-range host. As one of many that are running an AS/400 and having other host systems...

I have the diagnostic diskette for the later adapters at https://ibmmuseum.com/5250Emul/IBM/Diagnostic/ (the PNG image just shows what the diskette looks like; I should reduce it in size) - It should work for the earlier adapters since the I/O addresses are the same.

Sounds like great plans - The 3270 PC display boards are able to output to an MDA monitor if needed (that was the low-end submodel configuration), but as you say, a bunch of work to test.

Correct, that is 'DBA-ESDI' - I can't read the drive model and microcode level to compare to my page: https://ibmmuseum.com/Interrupts/INT13h/INT13h1C0B.htm

To come full-circle to the Model 50Z question, there are replacement "risers" to run IDE and CF drives; The Procom 'PIRA' (https://www.ardent-tool.com/8550/Procom_Pira.html) of antiquity, and modern retrofits: https://zzxio.com/product/mcide/ https://zzxio.com/support/mcide-cf/ The 20Mb (MFM)...

The true ESDI controllers (https://www.ardent-tool.com/storage/ESDI.html) and (5-1/4") drives are for the PS/2 Model 60 and 80 (towers). "DBA-ESDI" is mixing up some circuitry of the controller and (3-1/2") drives from the 60/80 design (same electronics are there, but as you have stated, the...

The ASIC has me a bit confused for the date-code ('1039') - but the '9314' means it was produced in Bromont, Canada ('93' plant code) and Burlington, Vermont ('14' plant code), but that is a very common IBM sequence on chips. The FRU ('1440834') is impossible to look up without a letter on the...

Or send it to Ken Shirriff to do - thanks for the quicker reply than mine was. I have these 8-bit 5250 emulation adapters pictured at https://ibmmuseum.com/Adapters/5250/IBM/8-bit/

Sorry for the late reply - That is the initial 5250 emulation adapter, as reported. See the line at the bottom of the "silver-cap" ASIC starting '18440...'? As Ken Shirriff discovered, '1' is for the location of pin 1, then '84' is the year, '40' is the week (as is standard in the industry). I...

I have all different flavors of the "Auto" ISA adapters - When the adapter was reduced in size from that version, the DE-9 connection was added back. The "Turbo" ISA adapters are later than the "Auto" series (even with 1997 and 1998 dates on the ASICs).

I have the different variants of ISA 'Auto' adapters, but haven't gone through them yet. For the (PCMCIA, so far) adapters under Windows, I'm documenting the drivers to a working configuration - and I intend to do the same for DOS just like your earlier post. Of course, it is taking some time.

'Pinegrove' - This is good ASIC to have; The 'Pinegrove Shrink' (die reduction; 50G6144) kicks up errors in certain situations. I'm still getting my Token-Ring lab set up and will need to start adding more systems to it soon.

Approved!

We should also start identifying the fuse value on the component list at the 'Ardent-Tool' as well. That is the go-to site for information on PS/2s and other IBM series. If you are interested, we have a Model 25 and 30 group on Facebook: https://www.facebook.com/groups/model25and30

The ISA PS/2s (model numbers below 50) use a "Starter Diskette": https://www.ardent-tool.com/8530/Planar_286.html

Yes, I'm getting a Token-Ring lab set up again. Can you verify that you don't have 50G6144 instead of 02G1394 on the ISA adapter? I'm wondering if the "non-IBM networking software" issue is cropping up for the apparent difference between the 'Pinegrove' (02G1394) and 'Pinegrove Shrink'...

An 'IBMer' (passed away may years now) that worked out of Boca Raton claimed there was a "Skyrocket" development that was used in-house that differed from the AT and XT 286 - never released commercially (however, he said it was an AT-sized planar)...