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- Newsgroups: comp.sys.atari.st
- Path: sparky!uunet!cs.utexas.edu!torn!cunews!nrcnet0!cu23.crl.aecl.ca!cc4.crl.aecl.ca!csullogg
- From: csullogg@cc4.crl.aecl.ca
- Subject: Portfolio Display info needed
- Message-ID: <10SEP92.08431687@cc4.crl.aecl.ca>
- Sender: news@cu23.crl.aecl.ca (USENET News System)
- Nntp-Posting-Host: cc4.crl.aecl.ca
- Organization: AECL RESEARCH
- Date: Thu, 10 Sep 1992 12:43:16 GMT
- Lines: 31
-
- I received the following request from a local company that does not have
- net access. Please forward any info to me so I can help these guys. Thanks
- =================================================================
-
-
-
- Atari Portfolio Display
-
-
-
- The BIOS on the ATARI PORTFOLIO allows the user control of individual
- pixels on the LCD display, but for real time programming, the
- BIOS calls are dreadfully slow in execution. Unfortunately,
- ATARI does not support direct manipulation of the hardware by
- users, and the hardware is distinctly different from the standard
- types used on PC's.
-
- Somewhere out there, there must be some users who have figured out
- how to manipulate the PORTFOLIO display at the direct hardware
- level, and perhaps would be willing to give me the following
- information:
-
- 1) What is the address of
- a) the status port
- b) the control port
- c) the data port ?
-
- 2) What are the individual bits in the status byte used for?
-
- 3) What is the procedure to set/clear individual pixels?
-
-