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- Path: sparky!uunet!gatech!usenet.ins.cwru.edu!agate!rsoft!mindlink!a344
- From: Tom_Klok@mindlink.bc.ca (Tom Klok)
- Newsgroups: comp.sys.atari.8bit
- Subject: Re: Adding a 2nd PIA
- Message-ID: <15063@mindlink.bc.ca>
- Date: 12 Sep 92 13:41:37 GMT
- Organization: MIND LINK! - British Columbia, Canada
- Distribution: world
- Lines: 33
-
- > Rick_Michael_Cortese@cup.portal.com writes:
- >
- > Just a non-verbose addition: Just got through wiring the 2nd PIA to a
- > Citizen 120D printer.
-
- Hey, I've got the same printer. Small world. :)
-
- > I haven't wrote/won't write a handler, but the wasy I have it set-up for a 7
- > bit character you just poke PORTA with the character then the character+128
- > to toggle the printer's Data Strobe line. It could'a been done with 8 bit
- > data, but I was just fool'n around.
-
- I'd reconsider the decision to tie away the handshake lines. -STROBE/BUSY are
- exactly the kind of thing they're good for. Then you could whip up a print
- buffer (a la the MIO's spooler) that runs efficiently in the background.
-
- > Total parts for adding a real centronics printer interface & a 19,200 baud
- > RS232 port should be less then $15.
-
- Ya, it's pretty cheap.
-
- > BTW: the BUSS is the only way to go for RS232, That way you don't have to
- > kill concurent mode during disk access.
-
- For sure.
-
- > I just have to pick a good chip to mount the 6551 on top of.
-
- Don't you find that piggybacking can get messy very quickly?
-
- --
- Tom Klok MIND LINK! Support team member - Vancouver BC
- a344@mindlink.bc.ca What, me hurry? -- Alfred E. Von Neuman
-