From: Groepaz (groepaz_at_gmx.net)
Date: 2003-10-15 17:40:14
On Wednesday 15 October 2003 07:49, Baltissen, GJPAA (Ruud) wrote: > Hallo Gpz, > > > 8255 sorry :) > > What 8255? Only the old XT has a 8255 onboard and that one is used for the > keyboard, reading the dipswitches etc. but not for the LPT. The original > LPT is made out of several TTL IC's. In fact I hunt these older cards > because a) they are very easy to turn into a bidirectional port by just > some cutting and adding three wires and b) these TTL-IC's make it quite > robust. 8255 is robust enough for me :) > Remark: I once had an old dragable that indeed used a 8255 for its built-in > LPT port but because of that it was incompatible with a lot of newer > software. oh well... just like almost every pc serial port "behaves like" a 16550UART, almost every (SPP-) parallelport "behaves like" a 8255. who carez whats actually written on the damned chip? :=) gpz Message was sent through the cbm-hackers mailing list
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