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EISA-Card in 715 /100

parisc-linux Rüdiger Scholz 4 participants 4 messages Apr 7, 2004 – Apr 8, 2004

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Rüdiger Scholz

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#0 lore raw

Hello,

my HP 715/100 has an extra graphics card (HCRX-24?). Now I have read that some 715s have an EISA-Slot instead of this graphics card. Can I replace my graphics card with an EISA-Card. And if yes, can I also use an ISA-card (e.g. an ISDN-Card)?

T.i.a,
Ruediger

#1 lore raw
Quoted 9 lines

Hello,

my HP 715/100 has an extra graphics card (HCRX-24?). Now I have read that some 715s have an EISA-Slot instead of this graphics card. Can I replace my graphics card with an EISA-Card. And if yes, can I also use an ISA-card (e.g. an ISDN-Card)?

T.i.a,
Ruediger

Hi Rüdiger,

As I understand it, EISA was provided on the 715s by an adapter card that sat in the GSC slot. Seems reasonable as both are controlled by WAX. So if you have a GSC card in the slot you presumably don't have the adapter.

In theory you can use ISA cards in EISA slots, but cars needing DMA will not work.

-Andy

#2 lore raw
Quoted 7 lines · Andy Walker
Quoted 7 lines

Hello,

my HP 715/100 has an extra graphics card (HCRX-24?). Now I have read that some 715s have an EISA-Slot instead of this graphics card. Can I replace my graphics card with an EISA-Card. And if yes, can I also use an ISA-card (e.g. an ISDN-Card)?

Quoted 8 lines
Quoted 2 lines

T.i.a,
Ruediger

Hi Rüdiger,

As I understand it, EISA was provided on the 715s by an adapter card that sat in the GSC slot. Seems reasonable as both are controlled by WAX. So if you have a GSC card in the slot you presumably don't have the adapter.

Not entirely ...

There are two families of 715; 715/33, /50 and /75 (Scorpio) and 715/64, /80, /100 and /100XC (Mirage or Turnip).

Scorpio is based on the PCX/T chip and Mirage on the PCX/L chip. These are quite different architectures. For example, Mirage has Lasi and Wax while Scorpio has discrete logic. If you ever get the chance to compare the two motherboards, you'll notice how many more components a Scorpio has than a Mirage.

The EISA adapter (Mongoose) was originally designed for the Scorpio family which predates GSC. It has an SGC interface instead, and plugs into the same slot as the graphics card. Mirage boxes have both GSC and SGC connectors, side-by-side on the motherboard.

There is an EISA adapter as a component of Wax, but I believe it's disabled in Mirage boxes. It's used in GSC-based C and J class boxes though.

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#3 lore raw
Quoted 6 lines · Matthew Wilcox

There are two families of 715; 715/33, /50 and /75 (Scorpio) and 715/64, /80, /100 and /100XC (Mirage or Turnip).
.....
There is an EISA adapter as a component of Wax, but I believe it's disabled in Mirage boxes. It's used in GSC-based C and J class boxes though.

Just for the record:
My 715/64 is called "Mirage 64" and has a EISA slot.
Until now I only tested successfully an ISA NE2xxx compatible network card in it though...

Helge