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+--- Thread: Apple IIc, ProTerm and WiModem232 disconnect problem (/showthread.php?tid=789)
Apple IIc, ProTerm and WiModem232 disconnect problem - fimbulvetr - 01-25-2021
I picked up a WiModem232 last year, and have been using my ROM 255 IIc with ProTerm 3.1 and the WiModem232 to connect to BBSes for a while now with no problems.
The other day I upgraded my IIc to ROM4x so I could connect a SmartPort hard drive. Now when I disconnect from a BBS, the computer freezes up until I toggle power on the modem to reboot the WiModem. Same thing when I tried a ROM3 in the IIc. The modem also froze up when I tried sending a command to change the baud rate, but so far all the other commands seem to be working. I can't just switch back to ROM255 to test it, as you have to make a minor alteration the the IIc motherboard (solder bridge a pad, cut another one, so it is not easily reversable.
Anyone have a similar experience or know of a solution, or know if there some change in the later ROMs that mess with the modem connection?
I set up ProTerm 3.1 and the WiModem as per the instructions for the IIc on this forum.
Thanks!
RE: Apple IIc, ProTerm and WiModem232 disconnect problem - admin - 01-25-2021
I am guessing that whatever mod you are doing is probably disabling something that ProTerm might be expecting to see to make the modem work.
RE: Apple IIc, ProTerm and WiModem232 disconnect problem - fimbulvetr - 01-25-2021
It is an official Apple mod. They provided updated ROM chips with instructions to cut a specific connection and solder bridge another one:
https://apple2online.com/web_documents/apple_iic_v4_rom_upgrade_installation.pdf
There are differences in how the serial port is handled between the original ROM255 and all later ROMs
https://wiki.68kmla.org/Apple_IIc#Revisions
But I don't know if that would cause the hangup problem.
RE: Apple IIc, ProTerm and WiModem232 disconnect problem - admin - 01-25-2021
The WiModem232 is just a serial device itself, exactly emulating a real modem. Since the problem appears to be with ProTerm, have you tried another terminal program?
RE: Apple IIc, ProTerm and WiModem232 disconnect problem - admin - 01-25-2021
You might also want to try AT&F to reset the settings to the defaults in case the DTR on hang-up is enabled.