thode@nprdc.arpa (Walt Thode) (10/25/88)
I recently acquired a super serial card for use with my old Apple ][+ but
I didn't get any documentation with it. Does anybody know what the
settings are for on the two sets of dip switches, 14 switches in all?
I can maybe figure it out by trial and error, but it might take a *very*
long time...
Any help will be appreciated.
--
Walt Thode ARPA: thode@nprdc.arpa
UUCP: {everywhere_else}!ucsd!nprdc!thodeSEWALL@UCONNVM.BITNET (Murph Sewall) (10/27/88)
>I recently acquired a super serial card for use with my old Apple ][+ but >I didn't get any documentation with it. Does anybody know what the >settings are for on the two sets of dip switches, 14 switches in all? If you plan to use the card as a modem port, the only switch that matters is number 6 on block 2 (SW2-6). That one enables interrupts (required by Kermit, TIC, Z-Link, and many other comm programs). The rest can all be set by software so it doesn't much matter what postion they are in. BTW there was a comment a few days ago that (virtually?) ALL Apple II Commware uses interrupts. That's not really true: SOFTERM and Apple Access II use polling. There are some real advantages to an effective polling routine (no lost characters at any supported speed and support for serial boards that don't support interrupts, for example). The problem with polling is that drivers must by-pass on-board ROM to be effective and, hence, a driver is required for specific hardware (an Apple CAT for example which, apparently, isn't supported by Kermit, TIC, Z-Link and the others). [The Far Side shall return (I hope)] Murph Sewall Sewall@UCONNVM.BITNET Business School sewall%uconnvm.bitnet@mitvma.mit.edu [INTERNET] U of Connecticut {rutgers psuvax1 ucbvax & in Europe - mcvax} !UCONNVM.BITNET!SEWALL [UUCP] -+- My employer isn't responsible for my mistakes AND vice-versa! (subject to change without notice; void where prohibited) "Close enough for government work" - source unknown (naturally ;-)