From: Larry Anderson (foxnhare_at_bigvalley.net)
Date: 2002-05-30 05:48:34
William Levak wrote: > > On Wed, 29 May 2002, Larry Anderson wrote: > > > > > > If you had a Plus/4 you would use one of the switches on the four switch > > model to make the 1670 Plus/4 compatible or if you had a 3-switch model > > I think you would cut the trace that pops out from under the the case on > > the bottom on the PC board, like on the Modem 300 (IIRC) :-/ > > I have a 3 switch 1670. It doesn't work, but I have one. There is no > jumper. > > PS This message was sent from my C64 using the program VT100.C64 found on > the Aprotek disk. This is the only VT100 emulator I have found that works > correctly with Pine. > It doesn't look like a jumper just a trace running from under the case across a ways and then back in... (As I said I know on the modem 300 you have it, but on the 1670 I think the 3 switch did and the four switch was adjusted so you didn;t have to cut it...) I looked in my Plus/4 PRG, and what PLUG newsletters I have, no mention of it. Don't know where my 1670 manual(s) might have gone... Aha, guess there is no cut trace on the 1670... from Projet 64's ( http://project64.c64.org/ ) 1670 manual: > Switch 1: Up for regular home and single-line business phones. Down > for PBX systems (usually the 1670 Modem can function in the > up position with PBX systems as well). > > Switch 2: Up for Analog Loopback self-test. See (3) below. Down for > normal operation. > > Switch 3: Up for no carrier detect signal. Down for Carrier Detect on > pin H-K of edge connector. > > Only Plus/4 users need be concerned with this switch. It must be > in the UP position for successful data transmission. Other > computers can operate regardless of how this switch is set. > So the trace I was talking about is only on the modem 300. The four switch modem settings were in another P64 file on 1670 Dip Switches: > DIP SWITCH SETTINGS > ------------------- > > The 'New 1670' differs from the older model in that it has 4 DIP switches > insted of 3. Here are the proper settings for 'EBBS/64 v3.3'. > > #1 - UP Enables the auto answer > function. The modem will > answer on the 2nd ring. > > #2 - DOWN Enables carrier detect on > pin H-K of the edge > connector. (It is reported > that this should not matter > except for C= PLUS 4 > users, but it does work on > the 64 in this position) > > #3 - UP Disables the speed indicate > signal to pin J. This allows > the software to detect the > caller's baud rate. > > #4 - DOWN Sets DTR (Data Terminal > Ready) to the grounded > position. > -- 01000011 01001111 01001101 01001101 01001111 01000100 01001111 01010010 01000101 Larry Anderson - Sysop of Silicon Realms BBS (209) 754-1363 300-14.4k bps Set your 8-bit C= rigs to sail for http://www.portcommodore.com/ 01000011 01001111 01001101 01010000 01010101 01010100 01000101 01010010 01010011 Message was sent through the cbm-hackers mailing list
Archive generated by hypermail 2.1.4.