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- From: kelly@spyro.cray.com (Matt Kelly)
- Subject: IRQ2 or IRQ5
- Message-ID: <1993Jan7.122713.17450@walter.cray.com>
- Lines: 31
- Sender: kelly@spyro (Matt Kelly)
- Nntp-Posting-Host: spyro.cray.com
- Date: 7 Jan 93 12:27:12 CST
-
-
- HELP!!!!
-
- I built a home-brew MIDI interface for my synthesizer setup. When
- I built it, I had an old PC-XT clone. I hooked up the receiver
- section of the interface's UART chip (8250) to IRQ2. This worked
- just dandy.
-
- Now I have a 386-SX system. IRQ 2 doesn't work anymore. All docu-
- mentation I have read has said that IRQ2 is a "cascade" interrupt.
- WHAT DOES THIS MEAN, AND HOW DO I MAKE IT WORK????
-
- In an effort to speed up my success, I rewired the interface so
- that it would use IRQ5 instead of IRQ2. Still no interrupt response.
-
- I took the software I was using on the old system (which I wrote),
- and re-compiled the .ASM files which handle the interrupts so that
- they would use IRQ5 instead. Total death.
-
- Any help would be appreciated. The system I have is a Goldstar with
- 2 serial, 1 parallel, 1 game port, 40 meg HD, 2 floppy drives, VGA.
-
- Thanks in advance,
-
- Matt K.
- ==============================================================================
- kelly@els.cray.com | Cray Research, Inc.
- |
- Opinions expressed herein are just | "The world's fastest supercomputers".
- that. |
- ==============================================================================
-