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- Path: firefly.prairienet.org!claevius
- From: claevius@firefly.prairienet.org (Brent Busby)
- Newsgroups: comp.sys.amiga.emulations
- Subject: Re: My Entire Bridgeboard
- Date: 24 Mar 1996 20:45:58 GMT
- Organization: University of Illinois at Urbana
- Distribution: world
- Message-ID: <4j4ca6$s1q@vixen.cso.uiuc.edu>
- References: <4iscpl$bvr@vixen.cso.uiuc.edu> <60.435.4478.0N20DA5F@canrem.com>
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-
- Stewart Hunt (stewart.hunt@canrem.com) wrote:
- : At 4:18 AM on 23 Mar 96, Brent Busby said to All:
-
- : system. While 5 can be used, you typically will want this for the
- : second parallel port LPT2:, so IRQ's such as 10, 11, or 12 would be
- : more appropriate.
-
- I can only set to IRQ #2-5 for serial ports (individual settings for
- each), and IRQ #5 or #7 for the parallel port. IRQ7 is taken by the
- bridgeboard's own LPT1 emulation, so that leaves *just* IRQ5 for the
- physical LPT2 port on the card. I know I've already got IRQ5 assigned
- to my modem port, but the documentation for the ZyXEL card says "Devices
- such as printers or plotters are not interrupt driven so it is acceptable
- for them to share an IRQ with a modem." Not being a PC user until I
- started messing with all this bridgeboard stuff, I really wouldn't know,
- but if that's true, I ought to be able to use IRQ5 for both my printer
- port *and* my modem port at the same time. If you know of a reason that
- would be bad though, please let me know....
-
-
- : I am using COM3 at IRQ 12 on my Lava complete multi
- : I/O board. (416)-674-5942. This board contains floppy, IDE, 2x16550
- : serial ports, bi-directional parallel, and game ports with very
- : flexible IRQ settings. It works perfectly in the BB environment.
-
- Do they have one of those that doesn't have the floppy and IDE controllers?
- It'd probably be less expensive, and I already have a SCSI card with a hard
- drive of its own, and the SCSI card has its own floppy controller, too.
-
-
- : This is exactly where you want the second parallel port LPT2: at IRQ5.
- : This is very useful because the emulated LPT1: is not a bidirectional
- : parallel port, which is required for things like laplink connections.
-
- Do you think I'd be able to connect that LPT2 parallel port to the
- provided extra parallel port on an Adriane ethernet card on the Amiga
- side and get a PLIP connection going? (I'm already going to be using
- the the ethernet ports themselves for the Amiga side's use, and I don't
- have room to give the bridgeboard its own ethernet card, but I figured
- possibly the bridgeboard could get TCP/IP connected parallel<->parallel
- to the extra parallel port that's provided on the Adriane card as an
- extra, using Parallel Line Internet Protocol.) And assuming that would
- work, what kind of speed could I expect from that? (I've heard some say
- that a regular PC parallel port can be run at 19200 baud without errors,
- though whether that's true or not, I don't know.)
-
-
- : BB> IRQ10 will be used by the ATI UVGA card. This IRQ is not listed as
- : BB> reserved, so that's not the problem. What *might* cause a problem
- : BB> is that it says in the card's manual -- and yes, I *know* this is
- : BB> absolutely and completely retarded, but this is what it says -- that
- : BB> the card reserves port addresses at $2E0-2EF. Heh. That's COM4,
- : BB> folks. Imagine, a top rated UVGA video card that *steals* your COM4
- : BB> I/O port like the shirt off your back. It may be okay though,
- : BB> because if what I'm planning works as intended, I may not actually
- : BB> run into any need for COM4. (I *still* think it's retarded.)
- : BB> IRQ11 is currently assigned, without problems, to the Adaptec SCSI-
- : BB> II board. So nothing can get IRQ11.
-
- : Strange that your video card requires an interrupt? I am using an ATI
- : Graphics Expression card and it does not use an interrupt. It does
- : however use the COM4 address which forced me to change my second serial
- : port configuration from COM4 IRQ12, to COM3 IRQ12 which works fine. I
- : also thought this was a bizzare thing to do on ATI's part.
-
- Hmm, maybe it doesn't. There's a jumper on the card, which the manual
- never talks about and only lists in the appendix as "Video Interrupt
- (Reserved For Future Use):", and for the ISA version of the card, the
- possible selections are IRQ 2, 3, 5, or 10. They don't say however
- what the correct jumper possitions are for each of those interrupts.
- Maybe this is something that I don't need at all, since they talk so
- little about it in the manual and since it's listed as reserved for
- future use, whatever they mean by that.
-
-
- : I am also using a SoundBlaster 16 SCSI card which adds sound using
- : IRQ10, and SCSI using IRQ11.(CD-ROM and ZIP Drive) The Janus Handler
- : does not conflict with the SCSI, and in my case and all of the Janus
- : functions work properly as they should.
-
- Really??? I'm using an Adaptec 1542CF, and so far, I have not been able
- to get the system to boot with Janus Handler loaded. Which memory page
- are you loading Janus into, $D000 or $A000?
-
-
- : Your I/O card is not quite a flexible as the LAVA, and the Video cards
- : use of IRQ10 is unusual to say the least.
-
- Finding out that I can use separate IRQs for COM1 and COM3 (see my other
- new post) may have solved my problem though on using the ZyXEL I've got.
- As for the video card, it's actually configurable to 2, 3, 5 or 10, but
- IRQ10 is the only interrupt that I could use in my circumstance that
- wouldn't cause problems for something else. And like I said above, I
- may not need it at all, since it is a pretty poorly documented jumper
- that's listed as reserved for future use, however they may mean that.
-
-
- : Aread and Awrite also
- : work under OS/2 as well, but a real mouse is required.
-
- Really?? I didn't know it was possible to load the Janus Handler
- successfully under OS/2! (Then again, I still haven't been able
- to make it load successfully with my SCSI BIOS, so...)
-
- --
- Amiga /// | | "They had a glow-in-the-dark
- 040 /// | Brent Busby ("Sequencer") | Santa in their yard. Santa
- \\\/// | claevius@prairienet.org | isn't radioactive, is he?
- \XX/ | | Cool beans. Nuclear Santa."
-