eravin@dasys1.UUCP (Ed Ravin) (05/24/89)
My setup at home is a C-128 (which spends nearly all its time in C64 mode), a 1571, and a NEC (C. Itoh) printer with a TYMAC Connection interface. When I use Assembler-64 (the standard Commodore package) to get an assembled listing of a large program, I get one page printed on the printer and then the Assembler quits, apparently because it received an EOF on the source file it was reading. When I slapped my 1541 in place of the 1571, everything worked fine (as it had before I obtained the 1571/C-128). What's going on? It seems to be the 1571 prematurely closing files. The assembly I'm doing uses a lot of the .FIL and .LIB commands, and I believe that it opens up the maximum number of simultaneous sequential files on the drive. I'm not the type of person to leave devices on my serial bus without turning them on, and the TYMAC interface doesn't have the unused (in pre-1571 days) pin of the serial bus connected to it, so the extra signals on the serial interface (if they even appear in this configuration) aren't affecting it. Will this problem be fixed if I upgrade ROMS? How do I get the latest? Please cc your replies to elr@trintex.UUCP, as my connections on this machine are somewhat unreliable... -- Ed Ravin | hombre!dasys1!eravin | "A mind is a terrible thing (BigElectricCatPublicUNIX)| eravin@dasys1.UUCP | to waste-- boycott TV!" --------------------------+----------------------+----------------------------- Reader bears responsibility for all opinions expressed in this article.
izot@f171.n221.z1.FIDONET.ORG (Geoffrey Welsh) (05/25/89)
> From: eravin@dasys1.UUCP (Ed Ravin) > Message-ID: <9771@dasys1.UUCP> > What's going on? It seems to be the 1571 prematurely closing files. OK, here's my guess (could be way off base, but enough of these guesses might dig up the problem...): The 1571, when powerered up, is in 1541 mode. This is automatically changed to 1571 mode when it is accessed using a burst mode command (by a C128). However, it will stay in 1541 (single-sided) mode if used by a C64 or a C128 in 64 mode. If for any reason your drive is being reset (either by a hardware or by a UJ command) by the C64, it will return to single-side mode and any attempts to access files which are on the top (second) side of the disk will cause errors (and, if your software is kinda smart, "premature closing" of the files.) -- Geoffrey Welsh - via FidoNet node 1:221/162 UUCP: ...!watmath!isishq!171!izot Internet: izot@f171.n221.z1.FIDONET.ORG