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Ultimate64/1541 Ultimate Swiftlink Emulation

Active Member

Hey, does anyone here have ImageBBS working with the emulated Swiftlink in the Ultimate64 or 1541 Ultimate?
It keeps getting stuck in a loop on line 60050.

I can use NovaTerm to talk to the emulated modem, and that's fine, so I know SOMETHING works.

I've got the emulated Swiftlink set to $DE00 with NMI interrupt.

I'm not sure if it's the issue, but ImageBBS is forcing in a lot of arguments that the emulated modem doesn't support. It always sends B0 or B1, and X1-X4. Those will definitely return an error, if that's what it's complaining about.

Topic starter Posted : 06/08/2022 5:35 pm
Shane - "PalKat"
Illustrious Member Admin

I am summonsing @bucko as he would know best on that.

The Kats Alley BBS -=[ ]=- ....Running Image 3.0 for the C64
8-Bit Boyz BBS -=[ ]=- ....Running Mystic on Windows
WEB -=[ ]=-

Posted : 08/08/2022 10:39 am
Estimable Member Moderator

Jeez, I completely missed this one... Sorry.. As for the U64 and built in Swiftlink, I just tested it on my setup, and it doesn't even answer. I never really played with getting it going, I am sure it has to do with the emulation not understanding most of the commands. I tried to explain this a couple of years back to another person who wanted to know why it didn't work with Image 2.0. At the time there was a bad ML which was not fully swiftlink capable, I was told at the time by Gideon, the Swiftlink emulation modem layer is very rudimentary at that time. It doesn't support all of the Hayes commands. There needs to be a better modem implementation on the U64, one that can actually be a modem per se'. Technically the Swiftlink is NOT a modem it is just a UART I believe 16550a which acts as a go between of a real modem and the computer, that is why when I run a real Swiftlink on the U64 with BBS Server or TCPSER it runs perfect because both BBS Server and TCPSER act as a modem. Sorry, I can't be more help..

Wrong Number Family of BBS'
Wrong Number ][ BBS - (Mystic BBS)
Wrong Number ]I[ BBS - (CNet Amiga BBS)
Wrong Number IV BBS - (Image BBS v3.0)
Bucko's Den - (SynchroNet BBS C= Color Graphis 80 Column)
Bucko's Den - BBS ANSI 80 Colum)

Posted : 10/10/2022 5:30 pm