12 Feb
2013
12 Feb
'13
3:09 p.m.
Hi,
Just wondering, is it possible to upgrade a CMD CQD-220/T/M to a
CQD-220/TM by replacing the 2 firmware eproms?
Thanks,
Ed
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12 Feb
12 Feb
3:25 p.m.
E. Groenenberg wrote:
Just wondering, is it possible to upgrade a CMD
CQD-220/T/M to a
CQD-220/TM by replacing the 2 firmware eproms?
I always though that there were just 3 different boards:
(a) CQD 220/TM
(b) CQD 220/M
(c) CQD 220/T
If so, the CQD 220/T/M would already support both tape
and disk, but perhaps not at the same time as a CQD 220/TM
is able to do?
Can anyone conform this?
Jerome Fine
3:57 p.m.
On Feb 12, 2013, at 10:25 AM, "Jerome H. Fine" <jhfinedp3k at compsys.to>
wrote:
Perhaps I misinterpreted the question, but I thought he meant
shorthand for EITHER a /T or an /M. I'm not aware of a /T/M
model, either.
- Dave
E. Groenenberg
wrote:
Just wondering, is it possible to upgrade a CMD
CQD-220/T/M to a
CQD-220/TM by replacing the 2 firmware eproms?
I always though that there were just 3 different boards:
(a) CQD 220/TM
(b) CQD 220/M
(c) CQD 220/T
If so, the CQD 220/T/M would already support both tape
and disk, but perhaps not at the same time as a CQD 220/TM
is able to do?
3:27 p.m.
On Feb 12, 2013, at 10:09 AM, "E. Groenenberg" <quapla at xs4all.nl>
wrote:
Hi,
Just wondering, is it possible to upgrade a CMD CQD-220/T/M to a
CQD-220/TM by replacing the 2 firmware eproms?
That's half the equation; you also need to replace the CSR decode
PAL with the /TM version. Glen Slick has the PALASM equations
up somewhere for a workalike; I've verified that they work using
a GAL22V10, which is both rewriteable if something goes wrong and
also a whole lot more available these days.
- Dave
3:35 p.m.
On Feb 12, 2013 7:13 AM, "E. Groenenberg" <quapla at xs4all.nl> wrote:
Hi,
Just wondering, is it possible to upgrade a CMD CQD-220/T/M to a
CQD-220/TM by replacing the 2 firmware eproms?
Thanks,
Ed
I have never personally used a 220/T/M You can upgrade a 220/T or a 220/M
to a /TM by replacing the EPROMs and the CSR decode PAL and I have done so.
Don't know if you also need to replace to CSR PAL on the /T/M. Is there a
P220xxxx or similar part number on the PAL?
5:04 p.m.
Well, I collected them form the garage and now they are on my desk.
The label says CQD-220A/M/T, 34056, B1EF2L
The firmware is F220AE1F2L & F220AE2F2L
One of the chips on the upper right is having a white label
with 'warranty void....' the other has no label and bears
the text 'qlogic' & 'EGP04804'.
I hope they are M & T, buy I guess they are either M or T (switchable).
Ed
On Feb 12, 2013 7:13 AM, "E. Groenenberg"
<quapla at xs4all.nl> wrote:
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Hi,
Just wondering, is it possible to upgrade a CMD CQD-220/T/M to a
CQD-220/TM by replacing the 2 firmware eproms?
Thanks,
Ed
I have never personally used a 220/T/M You can upgrade a 220/T or a 220/M
to a /TM by replacing the EPROMs and the CSR decode PAL and I have done
so.
Don't know if you also need to replace to CSR PAL on the /T/M. Is there a
P220xxxx or similar part number on the PAL?
14 Feb
14 Feb
4:48 p.m.
On Tue, Feb 12, 2013 at 9:04 AM, E. Groenenberg <quapla at xs4all.nl> wrote:
Well, I collected them form the garage and now they are on my desk.
The label says CQD-220A/M/T, 34056, B1EF2L
The firmware is F220AE1F2L & F220AE2F2L
One of the chips on the upper right is having a white label
with 'warranty void....' the other has no label and bears
the text 'qlogic' & 'EGP04804'.
I hope they are M & T, buy I guess they are either M or T (switchable).
What is the PAL part number in U40? Should be the only PAL in a
socket, near the EPROMs and CSR select jumpers. Not the chip
manufacturer part number (for example I have a PEEL173P on my 220/TM),
but the CMD part number, should be something like P22015A, P22016A,
P220016B, P22017A.
The CQD-220A/M/T F220AE1F2L, F220AE2F2L EPROMs are from the July 27,
1995 release, which is the latest version I found on the CMD website.
The corresponding CQD-220A/TM EPROMs from the same release are
F220AY1B2L, F220AY2B2L. I have .HEX files for those EPROMs from the
CMD website.
-Glen
5:32 p.m.
You probably do mean U30? U40 is a bus driver.
The code on that U30 chip is P220A08A, the '8' could also be a 'B'.
Ed
On Tue, Feb 12, 2013 at 9:04 AM, E. Groenenberg
<quapla at xs4all.nl> wrote:
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Well, I collected them form the garage and now they are on my desk.
The label says CQD-220A/M/T, 34056, B1EF2L
The firmware is F220AE1F2L & F220AE2F2L
One of the chips on the upper right is having a white label
with 'warranty void....' the other has no label and bears
the text 'qlogic' & 'EGP04804'.
I hope they are M & T, buy I guess they are either M or T (switchable).
What is the PAL part number in U40? Should be the only PAL in a
socket, near the EPROMs and CSR select jumpers. Not the chip
manufacturer part number (for example I have a PEEL173P on my 220/TM),
but the CMD part number, should be something like P22015A, P22016A,
P220016B, P22017A.
The CQD-220A/M/T F220AE1F2L, F220AE2F2L EPROMs are from the July 27,
1995 release, which is the latest version I found on the CMD website.
The corresponding CQD-220A/TM EPROMs from the same release are
F220AY1B2L, F220AY2B2L. I have .HEX files for those EPROMs from the
CMD website.
-Glen
6:29 p.m.
On Thu, Feb 14, 2013 at 9:32 AM, E. Groenenberg <quapla at xs4all.nl> wrote:
You probably do mean U30? U40 is a bus driver.
The code on that U30 chip is P220A08A, the '8' could also be a 'B'.
Ed
Oh, I just realized that you meant CQD-220A, not CQD-220. Completely
different boards.
The CQD-220A/T/M is also known as the CQD-200A/E which is Either TMSCP
or MSCP, but not both at the same time.
The ones I have also have version F220AE1F2L and F220AE2F2L in the
firmware EPROMs and CSR decode PAL version P220A08A in U30.
Yes, you need to replace both the firmware EPROMs and the U30 PAL to
get a 220A/E (220A/T/M) to function as a 220A/TM with simultaneous
TMSCP and MSCP support.
As far as I could determine the U30 PAL on the 220A only decodes
special CSR addresses, 17760520 and 17760760, which I suppose could be
changed on request by getting a custom PAL from CMD. The standard CSR
decoding is done somewhere else, maybe in the large CMD ASIC. Also,
as far as I could determine there is a set of static outputs of the
U30 PAL which indicates the product version. I created my own version
of the U30 PAL which changed the set of static outputs and replaced
the /E (/T/M) firmware with the /TM firmware and it seemed to work as
expected.
The 220A/TM firmware was on the CMD website, but not the PAL files.
-Glen
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8 comments
4 participants
participants (4)
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fraveydank＠gmail.com -
glen.slick＠gmail.com -
jhfinedp3k＠compsys.to -
quapla＠xs4all.nl