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Presario 425 serial port problem.
I'm trying to get a file off an old Compaq Presario 425, which has a
floppy drive so dirty or otherwise wrecked that I can't write to it. I'm not in a position to do anything heroic like replace the drive or do any serious monkeying with the machine. It is running DR-DOS 7.0.2 and not connected to a network. I connected a laptop to it via the serial port, and was just going to do a simple "MODE COM1:9600" and "COPY myfile COM1:", with a terminal program capturing the data on the laptop. However, writing to COM1: produces "Abort Retry Ignore". The cable and laptop are fine - this worked connected to another PC. I tried COM2:, and while I don't get "A/R/I", it doesn't appear on the laptop. The machine is using the serial port for a retail point of sale printer, so I know it is working. I thought the POS software might be doing some funny setups, so I temporarily renamed CONFIG.SYS and AUTOEXEC.BAT so they wouldn't execute, but no luck. Is there any sort of firmware setup that they could have used to set the serial port up in some non-standard configuration (weird IRQ settings, perhaps)? Or does the 425 have an internal modem that could be interfering somehow? My assumption was that the external 9-pin port would be COM1: in a standard setting. Is there any sort of BIOS setup which can be activated on startup - I tried F1 but it doesn't do anything - the 425 is after all back from 1993. Any suggestions would be gratefully appreciated. David Oberst/Yellowknife/NWT, Canada |
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