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- From: henryg@kullmar.se (Henry Gessau)
- Subject: IRQ 9 instead of IRQ 2 on ISA bus
- Message-ID: <1992Jul31.093843.10058@kullmar.se>
- Summary: IRQ 9 mapped to IRQ 2 on ISA bus?
- Keywords: IRQ ISA bus interrupt detection
- Organization: Firma Bo Kullmar Datakonsult
- Date: Fri, 31 Jul 1992 09:38:43 GMT
- Lines: 15
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- Someone told me the other day that some (most?) PCs with an ISA bus
- have the IRQ 9 signal connected to the pin on the bus slots that is
- designated for IRQ 2. This is quite a logical thing to do as there is
- no point in having IRQ 2 on the bus for AT class machines.
-
- How common is this?
- Can it be detected by software?
-
- --
- Henry Gessau henryg@kullmar.se
- --
- Henry Gessau henryg@kullmar.se
-