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- Path: sparky!uunet!elroy.jpl.nasa.gov!earle
- From: earle@elroy.jpl.nasa.gov (Greg Earle - Gainfully Unemployed)
- Subject: SPARCstation IPC 4 Mb SIMMs and serial ports- what kind are they?
- Message-ID: <1992Dec29.101204.12723@elroy.jpl.nasa.gov>
- Followup-To: poster
- Keywords: IPC
- Sender: isolar!earle@elroy.JPL.NASA.GOV
- Organization: Gainfully unemployed
- Date: Tue, 29 Dec 1992 10:12:04 GMT
- Lines: 31
-
- If I want to get some 4 Mbyte SIMMs for my SPARCstation-1 clone which has a
- motherboard that is seemingly much like an IPC's, what kind do I have to get?
-
- Specifically, are they
-
- - 4x9? (I assume so; as opposed to 4x8)
- - 70ns? (Faster, same speed or slower?)
- - 36 pin? (Or 32 pin or ?? pin?)
- - 9 chip or 3? (I assume 9 chip)
-
- Another question; this motherboard supplies two serial ports via 8-pin DIN
- connectors instead of standard 25-pin DB connectors. I bought a cable at a
- Mac dealer that has the right connectors, i.e. male DIN to male DB-25, and it
- purports to "support hardware flow control", but when I hook it up to my
- Telebit, the WorldBlazer never sees DTR. This sucks big time, as it prevents
- the ability to change WB settings on the fly and have them reset when the
- connection (and DTR) is dropped, as well as other nasties like not dropping
- out of "tip" on connection close, and (the worst) the potential for a program
- that uses the port to quit, perhaps due to timeout, while the connection itself
- (i.e., CD still present) stays on. I fear leaving home in case I return to
- find the modem still connected and a humoungous phone bill the next month ...
-
- What signals are presented on the serial port DIN connector pins on IPCs?
-
- (Wishing I'd kept my Field Engineer Handbook when I left Sun ... (-: )
-
- --
- - Greg Earle
- Itinerant Sun Consultant
- isolar!earle@elroy.JPL.NASA.GOV
- (818) 353-8695
-