I was lucky to not have to resort to an acoustic
coupler in the 300
bps days - the VICmodem, for those that don't know it, attaches to the
user port of a VIC-20 or C-64, is fed 300 bps data through either a
6522 (VIA) or 6526 (CIA) bit-banged TTL-levels, and converts to and
That reminds me...
Somewhere I have a C64 Prestel modem. I think it was a Commodore product,
probably only sold in the UK. It seems to plug into the expansion bus,
and contains, amongst other things, an SAA5070 'Lucy' chip, which was
part of the Philips Teletext/Prestel chipset (the modem part of said
chipset, of course).
It's also a direct-connect unit, to a UK phone line.
If anyone wants to know more, I'll try to digit it out and have a look at it.
-tony