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

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html
--- Synchronet 3.21b-Linux NewsLink 1.2

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


https://hackaday.com/2024/10/19/inside-the-rll-hard-drive-protocol/
--- Synchronet 3.21b-Linux NewsLink 1.2

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

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting. I know it was used on some small mainframes like
the 9370 and probably some early AS/400s. Sun also used it as an option
on some Sun3/4 era systems IIRC. But I think the big frames were all
bus/tag until ESCON and FICON.
--- Synchronet 3.21b-Linux NewsLink 1.2

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

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes like
the 9370 and probably some early AS/400s.-a Sun also used it as an option
on some Sun3/4 era systems IIRC.-a But I think the big frames were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

http://ps-2.kev009.com/ohland/SCSI/High_Performance_Winchesters.html

Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes like
the 9370 and probably some early AS/400s.-a Sun also used it as an
option on some Sun3/4 era systems IIRC.-a But I think the big frames
were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

http://www.bitsavers.org/pdf/fips/FIPS_130_IPI.pdf

Louis Ohland wrote:

http://ps-2.kev009.com/ohland/SCSI/High_Performance_Winchesters.html

Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes like
the 9370 and probably some early AS/400s.-a Sun also used it as an
option on some Sun3/4 era systems IIRC.-a But I think the big frames
were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

http://ps-2.kev009.com/ohland/SCSI/Intelligent_Peripheral_Interface.html

This looser must not of had a life.

Louis Ohland wrote:

http://www.bitsavers.org/pdf/fips/FIPS_130_IPI.pdf

Louis Ohland wrote:

http://ps-2.kev009.com/ohland/SCSI/High_Performance_Winchesters.html

Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes
like the 9370 and probably some early AS/400s.-a Sun also used it as
an option on some Sun3/4 era systems IIRC.-a But I think the big
frames were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

On 2/12/26 11:37 PM, Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Very cool. I don't suppose drivers ever turned up?

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes like
the 9370 and probably some early AS/400s.-a Sun also used it as an
option on some Sun3/4 era systems IIRC.-a But I think the big frames
were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

https://archive.org/details/edn-1989_08_03/page/64/mode/1up?q=simulex

Louis Ohland wrote:

http://www.bitsavers.org/pdf/fips/FIPS_130_IPI.pdf

Louis Ohland wrote:

http://ps-2.kev009.com/ohland/SCSI/High_Performance_Winchesters.html

Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes
like the 9370 and probably some early AS/400s.-a Sun also used it as
an option on some Sun3/4 era systems IIRC.-a But I think the big
frames were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

https://archive.org/details/edn-1987_01_08/page/105/mode/1up?q=simulex

Louis Ohland wrote:

https://archive.org/details/edn-1989_08_03/page/64/mode/1up?q=simulex

Louis Ohland wrote:

http://www.bitsavers.org/pdf/fips/FIPS_130_IPI.pdf

Louis Ohland wrote:

http://ps-2.kev009.com/ohland/SCSI/High_Performance_Winchesters.html

Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes
like the 9370 and probably some early AS/400s.-a Sun also used it as >>>>> an option on some Sun3/4 era systems IIRC.-a But I think the big
frames were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

Not seeing any yet. Simulex didn't have a webpage. Haven't seen if
anyone bought 'em...

Kevin Bowling wrote:

On 2/12/26 11:37 PM, Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Very cool.-a I don't suppose drivers ever turned up?

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes like
the 9370 and probably some early AS/400s.-a Sun also used it as an
option on some Sun3/4 era systems IIRC.-a But I think the big frames
were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

https://archive.org/details/bitsavers_HardcopyHa_89780776/page/41/mode/1up?q=simulex+ipi

Louis Ohland wrote:

https://archive.org/details/edn-1987_01_08/page/105/mode/1up?q=simulex

Louis Ohland wrote:

https://archive.org/details/edn-1989_08_03/page/64/mode/1up?q=simulex

Louis Ohland wrote:

http://www.bitsavers.org/pdf/fips/FIPS_130_IPI.pdf

Louis Ohland wrote:

http://ps-2.kev009.com/ohland/SCSI/High_Performance_Winchesters.html

Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes >>>>>> like the 9370 and probably some early AS/400s.-a Sun also used it >>>>>> as an option on some Sun3/4 era systems IIRC.-a But I think the big >>>>>> frames were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

Thanks to our glorious tech overlords, I can't findt the ultimate fate
of Simulex Corporation out of Tustin, CA. They might have been merged.
No sign they went bankrupt.

Our AI overlords assume Simulex refers to a fire safety company, or some
other simulations event. Fookin' worthless.

I saw a snippet that connected Simulex and IBM working on developing
IPI. Everybody knows that partnering with IBM always leads to prosperity...

Lights out.

Louis Ohland wrote:

Not seeing any yet. Simulex didn't have a webpage. Haven't seen if
anyone bought 'em...

Kevin Bowling wrote:

On 2/12/26 11:37 PM, Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Very cool.-a I don't suppose drivers ever turned up?

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes
like the 9370 and probably some early AS/400s.-a Sun also used it as
an option on some Sun3/4 era systems IIRC.-a But I think the big
frames were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

On 2/13/26 12:45 AM, Louis Ohland wrote:

Thanks to our glorious tech overlords, I can't findt the ultimate fate
of Simulex Corporation out of Tustin, CA. They might have been merged.
No sign they went bankrupt.

Our AI overlords assume Simulex refers to a fire safety company, or some other simulations event. Fookin' worthless.

I saw a snippet that connected Simulex and IBM working on developing
IPI. Everybody knows that partnering with IBM always leads to prosperity...

Lights out.

Yeah sounds like the whole concept was dead by the time the WWW took
off. FC was already under way in the early to mid 90s.

Louis Ohland wrote:

Not seeing any yet. Simulex didn't have a webpage. Haven't seen if
anyone bought 'em...

Kevin Bowling wrote:

On 2/12/26 11:37 PM, Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Very cool.-a I don't suppose drivers ever turned up?

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes
like the 9370 and probably some early AS/400s.-a Sun also used it as >>>>> an option on some Sun3/4 era systems IIRC.-a But I think the big
frames were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2

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

On 2/13/26 5:33 PM, Kevin Bowling wrote:

On 2/13/26 12:45 AM, Louis Ohland wrote:

Thanks to our glorious tech overlords, I can't findt the ultimate fate
of Simulex Corporation out of Tustin, CA. They might have been merged.
No sign they went bankrupt.

Our AI overlords assume Simulex refers to a fire safety company, or
some other simulations event. Fookin' worthless.

I saw a snippet that connected Simulex and IBM working on developing
IPI. Everybody knows that partnering with IBM always leads to
prosperity...

Lights out.

Yeah sounds like the whole concept was dead by the time the WWW took
off.-a FC was already under way in the early to mid 90s.

Here is a high quality write up discussing why SCSI won the disk
interface http://www.bitsavers.org/pdf/auspex/techReport/tr06.pdf

Louis Ohland wrote:

Not seeing any yet. Simulex didn't have a webpage. Haven't seen if
anyone bought 'em...

Kevin Bowling wrote:

On 2/12/26 11:37 PM, Louis Ohland wrote:

Simulex IX4000 IPI-2
https://ardent-tool.com/storage/Simulex_IPI.html

Very cool.-a I don't suppose drivers ever turned up?

Other than having dog-robbed the i960CF-25 off of it, it is still
slumbering upstairs in the Fortress of Solitude...

Kevin Bowling wrote:

On 2/11/26 1:12 PM, Louis Ohland wrote:

http://ps-2.kev009.com/ohland/8550/Hard_Disk_Interfaces.html

IPI is interesting.-a I know it was used on some small mainframes >>>>>> like the 9370 and probably some early AS/400s.-a Sun also used it >>>>>> as an option on some Sun3/4 era systems IIRC.-a But I think the big >>>>>> frames were all bus/tag until ESCON and FICON.

--- Synchronet 3.21b-Linux NewsLink 1.2