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- Path: sparky!uunet!portal!cup.portal.com!Rick_Michael_Cortese
- From: Rick_Michael_Cortese@cup.portal.com
- Newsgroups: comp.sys.atari.8bit
- Subject: Re: Adding a 2nd PIA
- Message-ID: <65907@cup.portal.com>
- Date: Tue, 15 Sep 92 07:57:38 PDT
- Organization: The Portal System (TM)
- Distribution: world
- References: <15063@mindlink.bc.ca>
- <65743@cup.portal.com><92256.141056AKH104@psuvm.psu.edu><1992Sep14.153405.
- 12802@miavx1.acs.muohio.edu> <92258.185728JJMCWILL@MTUS5.BITNET>
- Lines: 21
-
- Ryan; I believe Wooley did a 2nd GTIA with it's own ram. He said it was so
- easy that Atari should have thought about doing it. I can't remember many
- of the details, but I think he did stuff like had one in displaying 16
- lums while the other displayed 16 colors => 256 colors W/O DLI's. But I
- don't think many people jumped on the bandwagon so no drawing program or
- pictures were ever done on it. I think someone was going to GIF viewer, but
- I never heard if it got finished.
- Jeff; I started out doing everything on the bus, but then from the surveys
- I've seen, only about 40% of us have 800XL's. It's no big thing, every signal
- on the bus can be had in the computer & every signal in the computer can
- be brought out to the buss. The only thing I'm sort'a worried about is if
- we start going to far from the original hardware design we will lose our
- ability to understand what each other is talking about. For instance, I think
- everyone in the sig can just say, "Yeah, another PIA at $D700, I know how to
- work that." without even seeing the schematic. Even something like a PIA
- @ $D320 wouldn't be a problem for most people that can read a joystick from
- hardware. As long as nobody designs something that goes out of the original
- hardware area or needs something like a one of a kind PROM, we're all right.
- I've got to admit though, I'm thinking a 34 pin expansion via a $3 disk drive
- cable would give me more then enough signals for anything I'd need, & 3 edge
- card connectors to boot!
-