https://ibmmuseum.com/Adapters/5250/IBM/MCA/3638FFF8/
As in ??? is this good for?
https://ibmmuseum.com/Adapters/5250/IBM/MCA/3638FFF8/
My naming convention for that web directory was thinking it was for the System/36 and 38 - the adapter ID is FFF8h
The single-session adapter is at https://www.ardent-tool.com/communications/5250.html - I've got adapter images and software at https://ibmmuseum.com/Adapters/5250/IBM/MCA/5250ECFF/ - That will be in a video soon too.
single-session adapter
Nice work!
So. Single Session...does that mean there is a multiple session adapter?
Do tell...
microchannel multi-sessions adapters too.So. Single Session...does that mean there is a multiple session adapter?
Do tell...
There are even multi-session terminals - all of the "InfoWindow" models can do up to four "display sessions" and one "printer session". For the IBM microchannel adapters, the 36/38 Workstation adapter is the multi-session model. IDEAssociates had
Evil Dave, the single vs multiple stuff is interesting, not that I'm questioning my life choices over it....
Odd, the announcement letter mentions an 8088... oh really? Perhaps the multi-sessions needed a CPU in order to do WHAT? Manage memory? Bank switch?
https://ibmmuseum.com/Adapters/5250/IBM/MCA/3638FFF8/3638FFF8_Top.jpg
The chip legends are indistinct. What are the two big plastic DIPs in
the upper left corner? 24.0000 MHz osc, I _ASSUME_ clock divided by two?
On 11/1/2021 12:53, IBMMuseum wrote:
Evil Dave, the single vs multiple stuff is interesting, not that I'm
questioning my life choices over it....
Odd, the announcement letter mentions an 8088... oh really? Perhaps the
multi-sessions needed a CPU in order to do WHAT? Manage memory? Bank
switch?
The single-session ECFFh adapter also has an 8088-2 (8MHz) too - IBM
also started using x86 on terminals with the 3197 Display Station
(which has an 8088-2 as well): The original InfoWindow is an NEC V20
at 8MHz, the 3488 has a V20 at 10MHz, and the 3489 has a 286-10MHz
(and has some AS/400 application to stream video to a PS/2 TV).
"To do what" will take some time with the 3488 and 3489, as everything
else is in a large ASIC on the board...
3489 has a 286-10MHz (and has some AS/400 application to stream video to a PS/2 TV).Evil Dave, the single vs multiple stuff is interesting, not that I'm
questioning my life choices over it....
Odd, the announcement letter mentions an 8088... oh really? Perhaps the
multi-sessions needed a CPU in order to do WHAT? Manage memory? Bank switch?
The single-session ECFFh adapter also has an 8088-2 (8MHz) too - IBM also started using x86 on terminals with the 3197 Display Station (which has an 8088-2 as well): The original InfoWindow is an NEC V20 at 8MHz, the 3488 has a V20 at 10MHz, and the
"To do what" will take some time with the 3488 and 3489, as everything else is in a large ASIC on the board...
https://ibmmuseum.com/Adapters/5250/IBM/MCA/3638FFF8/3638FFF8_Top.jpg
The chip legends are indistinct. What are the two big plastic DIPs in
the upper left corner? 24.0000 MHz osc, I _ASSUME_ clock divided by two?
On 1.11.2021 19:00, Louis Ohland wrote:
https://ibmmuseum.com/Adapters/5250/IBM/MCA/3638FFF8/3638FFF8_Top.jpg
The chip legends are indistinct. What are the two big plastic DIPs in
the upper left corner? 24.0000 MHz osc, I _ASSUME_ clock divided by two?
Louis, are you working on the "FFF8" page/outline?
I've updated the 5250 "ECFF" page: https://ardent-tool.com/communications/5250.html
The "FFF8" will be next... unless you are already on it. :)
I was happily oblivious to the 36/38 adapter. Dave's image is pretty
usable except the two DIPs in the upper left.
See the row of RAM at the top? I >assume< the four glass diodes are part
of the DB15 port. Protective or polarizing or voltage drop? Sugar cube
near port.
Weird component labeling, Alphabet along top, "M" by the left corner,
"A" towards slot bracket. H8te that style....
On 11/1/2021 16:47, Tomas Slavotinek wrote:
On 1.11.2021 19:00, Louis Ohland wrote:
https://ibmmuseum.com/Adapters/5250/IBM/MCA/3638FFF8/3638FFF8_Top.jpg
The chip legends are indistinct. What are the two big plastic DIPs in
the upper left corner? 24.0000 MHz osc, I _ASSUME_ clock divided by two?
Louis, are you working on the "FFF8" page/outline?
I've updated the 5250 "ECFF" page:
https://ardent-tool.com/communications/5250.html
The "FFF8" will be next... unless you are already on it. :)
Nine TI TMS4256FML-12 256kx1 DRAM, Fast Page. These DRAMs are also used
on 30 pin SIP / SIMMs.
https://datasheet.datasheetarchive.com/originals/scans/Scans-007/Scans-00148998.pdf
First came out in '83, revised '88.
So, without alcohol, we have a 256KB system here, with 1 bit of parity.
On 11/1/2021 18:32, Louis Ohland wrote:
I was happily oblivious to the 36/38 adapter. Dave's image is pretty
usable except the two DIPs in the upper left.
See the row of RAM at the top? I >assume< the four glass diodes are
part of the DB15 port. Protective or polarizing or voltage drop? Sugar
cube near port.
Weird component labeling, Alphabet along top, "M" by the left corner,
"A" towards slot bracket. H8te that style....
On 11/1/2021 16:47, Tomas Slavotinek wrote:
On 1.11.2021 19:00, Louis Ohland wrote:
https://ibmmuseum.com/Adapters/5250/IBM/MCA/3638FFF8/3638FFF8_Top.jpg
The chip legends are indistinct. What are the two big plastic DIPs
in the upper left corner? 24.0000 MHz osc, I _ASSUME_ clock divided
by two?
Louis, are you working on the "FFF8" page/outline?
I've updated the 5250 "ECFF" page:
https://ardent-tool.com/communications/5250.html
The "FFF8" will be next... unless you are already on it. :)
Yeah, can't read the two intel DIPs either.
Dave's photos are usually ok, but I think the camera is doing some
rather heavy post-processing on the photos. High contrast detail -
especially text - often looks unnatural/wonky, and low contrast detail
is smudged, more than it should be. Strange...
Yeah, can't read the two intel DIPs either.
Dave's photos are usually ok, but I think the camera is doing some
rather heavy post-processing on the photos. High contrast detail -
especially text - often looks unnatural/wonky, and low contrast detail
is smudged, more than it should be. Strange...
The row/column labeling is really annoying. It was also used on the P70 planar. Wegh.
On 2.11.2021 0:49, Louis Ohland wrote:
Nine TI TMS4256FML-12 256kx1 DRAM, Fast Page. These DRAMs are also
used on 30 pin SIP / SIMMs.
https://datasheet.datasheetarchive.com/originals/scans/Scans-007/Scans-00148998.pdf
First came out in '83, revised '88.
So, without alcohol, we have a 256KB system here, with 1 bit of parity.
On 11/1/2021 18:32, Louis Ohland wrote:
I was happily oblivious to the 36/38 adapter. Dave's image is pretty
usable except the two DIPs in the upper left.
See the row of RAM at the top? I >assume< the four glass diodes are
part of the DB15 port. Protective or polarizing or voltage drop?
Sugar cube near port.
Weird component labeling, Alphabet along top, "M" by the left corner,
"A" towards slot bracket. H8te that style....
On 11/1/2021 16:47, Tomas Slavotinek wrote:
On 1.11.2021 19:00, Louis Ohland wrote:
https://ibmmuseum.com/Adapters/5250/IBM/MCA/3638FFF8/3638FFF8_Top.jpg >>>>>
The chip legends are indistinct. What are the two big plastic DIPs
in the upper left corner? 24.0000 MHz osc, I _ASSUME_ clock divided
by two?
Louis, are you working on the "FFF8" page/outline?
I've updated the 5250 "ECFF" page:
https://ardent-tool.com/communications/5250.html
The "FFF8" will be next... unless you are already on it. :)
So, since we have a CPU and local memory, is this going to allow 8 8088s
in a Model 60?
Yeah, can't read the two intel DIPs either.
Dave's photos are usually ok, but I think the camera is doing some
rather heavy post-processing on the photos. High contrast detail -
especially text - often looks unnatural/wonky, and low contrast detail
is smudged, more than it should be. Strange...
And they were likely hurried - I don't think I posted them to Facebook and then re-downloaded them for my webspace, but who knows. That said, I'm trying to get a better sort of photo rig here and be more concerned about having the boards cleaned better.
I was Trolling the Great Moravian Hope on 8x 8088s. Not sure if they
could control the bus, nor do I think they could juggle even 16MBs.
Maybe V20s, right?
| Sysop: | Keyop |
|---|---|
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