From Newsgroup: comp.sys.ibm.ps2.hardware

Folks, I've dabbled in a number of arcane devices over the decades.
Sifting through IBM Technoslovakian -AND- poorly written ad copy
sharpens one's perception [or destroys it...].

Mylex discriminates between one CHIP and two CHIP DAC960. Why isn't that SOCKET? Further, one can see two socket DAC960 with one EEPROM.

So, while Peter has come up with a Baron Von M|+nchhausen class of
fantastical story, it seems quite possumble...

Some other oorts to run down...

From Peter https://groups.google.com/g/comp.sys.ibm.ps2.hardware/c/KxhTry9mGY0/m/pBFBIj3B9NwJ

The only -probably working but yet untested- method to get the old single-flash 960P to a BIOS 3.x seem to include externally copying of
the 28F1001 chips. You need two chips, erase them, then copy the
firmware with an Eprommer into the lower / upper 128K. Each chip is 128K
x 8 bit. The one actually present on the 960P is only the lower. The
socket for the upper memory range is yet unpopulated.

I'd tried stuffing in an empty 128K chip into that socket and then flash
to 3.x but the only thing I got was a Raid-Adapter firmware error with
the second chip installed right after power on and the "Flasher"
software refused to run the upgrade.

Too bad.
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From Newsgroup: comp.sys.ibm.ps2.hardware

Not coming up with documentation on a "28F1001", but there is a 1Mb
128kx8 28F001...

Louis Ohland wrote:

Folks, I've dabbled in a number of arcane devices over the decades.
Sifting through IBM Technoslovakian -AND- poorly written ad copy
sharpens one's perception [or destroys it...].

Mylex discriminates between one CHIP and two CHIP DAC960. Why isn't that SOCKET? Further, one can see two socket DAC960 with one EEPROM.

So, while Peter has come up with a Baron Von M|+nchhausen class of fantastical story, it seems quite possumble...

Some other oorts to run down...

From Peter https://groups.google.com/g/comp.sys.ibm.ps2.hardware/c/KxhTry9mGY0/m/pBFBIj3B9NwJ

The only -probably working but yet untested- method to get the old single-flash 960P to a BIOS 3.x seem to include externally copying of
the 28F1001 chips. You need two chips, erase them, then copy the
firmware with an Eprommer into the lower / upper 128K. Each chip is 128K
x 8 bit. The one actually present on the 960P is only the lower. The
socket for the upper memory range is yet unpopulated.

I'd tried stuffing in an empty 128K chip into that socket and then flash
to 3.x but the only thing I got was a Raid-Adapter firmware error with
the second chip installed right after power on and the "Flasher"
software refused to run the upgrade.

Too bad.

--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: comp.sys.ibm.ps2.hardware

28F001BX?

Louis Ohland wrote:

Not coming up with documentation on a "28F1001", but there is a 1Mb
128kx8 28F001...

Louis Ohland wrote:

Folks, I've dabbled in a number of arcane devices over the decades.
Sifting through IBM Technoslovakian -AND- poorly written ad copy
sharpens one's perception [or destroys it...].

Mylex discriminates between one CHIP and two CHIP DAC960. Why isn't
that SOCKET? Further, one can see two socket DAC960 with one EEPROM.

So, while Peter has come up with a Baron Von M|+nchhausen class of
fantastical story, it seems quite possumble...

Some other oorts to run down...

-aFrom Peter
https://groups.google.com/g/comp.sys.ibm.ps2.hardware/c/KxhTry9mGY0/m/pBFBIj3B9NwJ


The only -probably working but yet untested- method to get the old
single-flash 960P to a BIOS 3.x seem to include externally copying of
the 28F1001 chips. You need two chips, erase them, then copy the
firmware with an Eprommer into the lower / upper 128K. Each chip is
128K x 8 bit. The one actually present on the 960P is only the lower.
The socket for the upper memory range is yet unpopulated.

I'd tried stuffing in an empty 128K chip into that socket and then
flash to 3.x but the only thing I got was a Raid-Adapter firmware
error with the second chip installed right after power on and the
"Flasher" software refused to run the upgrade.

Too bad.

--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: comp.sys.ibm.ps2.hardware

https://sup.xenya.si/sup/info/mylex/960PD-PL/PF3D2.PDF

page 49

EEPROM Only U47 is occupied for firmware versions prior to 3.x.
U34 & U47 are both occupied for firmware 3.x or greater.

Also, the manuel identifies a DAC960PD-Ultra... remember the D040351 has
an FCCID of D5NDAC960PDU-2

Louis Ohland wrote:

Folks, I've dabbled in a number of arcane devices over the decades.
Sifting through IBM Technoslovakian -AND- poorly written ad copy
sharpens one's perception [or destroys it...].

Mylex discriminates between one CHIP and two CHIP DAC960. Why isn't that SOCKET? Further, one can see two socket DAC960 with one EEPROM.

So, while Peter has come up with a Baron Von M|+nchhausen class of fantastical story, it seems quite possumble...

Some other oorts to run down...

From Peter https://groups.google.com/g/comp.sys.ibm.ps2.hardware/c/KxhTry9mGY0/m/pBFBIj3B9NwJ

The only -probably working but yet untested- method to get the old single-flash 960P to a BIOS 3.x seem to include externally copying of
the 28F1001 chips. You need two chips, erase them, then copy the
firmware with an Eprommer into the lower / upper 128K. Each chip is 128K
x 8 bit. The one actually present on the 960P is only the lower. The
socket for the upper memory range is yet unpopulated.

I'd tried stuffing in an empty 128K chip into that socket and then flash
to 3.x but the only thing I got was a Raid-Adapter firmware error with
the second chip installed right after power on and the "Flasher"
software refused to run the upgrade.

Too bad.

--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: comp.sys.ibm.ps2.hardware

Also, the EEPROM is identified as "Boot Block". Makes me wonder if
previous attempts to go to 3.x used the correct Bottom [B] or Top [T]
versions of the 28F001BXT/BXB ?

Louis Ohland wrote:

https://sup.xenya.si/sup/info/mylex/960PD-PL/PF3D2.PDF

page 49

EEPROM Only U47 is occupied for firmware versions prior to 3.x.
-a-a-a-a-a-a U34 & U47 are both occupied for firmware 3.x or greater.

Also, the manuel identifies a DAC960PD-Ultra... remember the D040351 has
an FCCID of D5NDAC960PDU-2

Louis Ohland wrote:

Folks, I've dabbled in a number of arcane devices over the decades.
Sifting through IBM Technoslovakian -AND- poorly written ad copy
sharpens one's perception [or destroys it...].

Mylex discriminates between one CHIP and two CHIP DAC960. Why isn't
that SOCKET? Further, one can see two socket DAC960 with one EEPROM.

So, while Peter has come up with a Baron Von M|+nchhausen class of
fantastical story, it seems quite possumble...

Some other oorts to run down...

-aFrom Peter
https://groups.google.com/g/comp.sys.ibm.ps2.hardware/c/KxhTry9mGY0/m/pBFBIj3B9NwJ


The only -probably working but yet untested- method to get the old
single-flash 960P to a BIOS 3.x seem to include externally copying of
the 28F1001 chips. You need two chips, erase them, then copy the
firmware with an Eprommer into the lower / upper 128K. Each chip is
128K x 8 bit. The one actually present on the 960P is only the lower.
The socket for the upper memory range is yet unpopulated.

I'd tried stuffing in an empty 128K chip into that socket and then
flash to 3.x but the only thing I got was a Raid-Adapter firmware
error with the second chip installed right after power on and the
"Flasher" software refused to run the upgrade.

Too bad.

--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: comp.sys.ibm.ps2.hardware

On 2/4/26 6:01 AM, Louis Ohland wrote:

Folks, I've dabbled in a number of arcane devices over the decades.
Sifting through IBM Technoslovakian -AND- poorly written ad copy
sharpens one's perception [or destroys it...].

Mylex discriminates between one CHIP and two CHIP DAC960. Why isn't that SOCKET? Further, one can see two socket DAC960 with one EEPROM.

So, while Peter has come up with a Baron Von M|+nchhausen class of fantastical story, it seems quite possumble...

Some other oorts to run down...

From Peter https://groups.google.com/g/comp.sys.ibm.ps2.hardware/c/KxhTry9mGY0/m/ pBFBIj3B9NwJ

The only -probably working but yet untested- method to get the old single-flash 960P to a BIOS 3.x seem to include externally copying of
the 28F1001 chips. You need two chips, erase them, then copy the
firmware with an Eprommer into the lower / upper 128K. Each chip is 128K
x 8 bit. The one actually present on the 960P is only the lower. The
socket for the upper memory range is yet unpopulated.

I'd tried stuffing in an empty 128K chip into that socket and then flash
to 3.x but the only thing I got was a Raid-Adapter firmware error with
the second chip installed right after power on and the "Flasher"
software refused to run the upgrade.

Too bad.

The DAC960 in MCA guise is interesting but in PCI land it is not very.
PCI had a long life span so options open up quite a bit aside from some occasional compatibility oddities on very early systems (2.0 vs newer, voltage, option ROM leading to a bootable system).

These days, the IBM ServerRAID series are readily available for tens of dollars. If you get a 3L or newer they have pretty wide OS support
including Linux and BSD. If you don't need array, Symbios/LSI SCSI
cards took over the NCR SCSI heritage and are great. Adaptec cards are
also generally good and plentiful.

I find those to be pretty good but there are cheap PCI SATA and eSATA
options as well like the SIL3124. This can open the door to easy SSD conversion.

Regards,
Kevin
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