Problems hooking parallel printer to my 7300 (repost)

James Birdsall jwbirdsa at amc-gw.amc.com
Tue Mar 5 03:57:00 AEST 1991


   Are you sure the cable is OK? Bit 6 seems to be stuck on.

   Between each line, you're seeing "MJ". This should be ^M^J, an ordinary
CR/LF pair. The difference between the two is bit 6, 0x40. Spaces start
out as 0x20 and end up as (0x20 | 0x40 = 0x60), which is the back quote.

   The text comes out OK because lowercase letters already have bit 6 set
and are therefore not affected.

   It sounds like a hardware problem, either in the cable or the parallel
port itself. If this bug were in the software, it would have been fixed
long ago.

-- 
James W. Birdsall   WORK: jwbirdsa at amc.com   {uunet,uw-coco}!amc-gw!jwbirdsa
HOME: {uunet,uw-coco}!amc-gw!picarefy!jwbirdsa OTHER: 71261.1731 at compuserve.com
========== "Think of an animal that's small and fuzzy." "Mold." -- RM =========
=========== "For it is the doom of men that they forget." -- Merlin ===========



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