Article View: comp.sys.atari.st
Article #6323Video pointer
From: Neil Forsyth
Date: Thu, 30 Nov 1989 14:59
Date: Thu, 30 Nov 1989 14:59
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1503 bytes
Could Atari not make a pin compatible MMU chip that could replace the normal one in the ST and give us all word alligned and segmented video RAM just like the STE. From looking at the circuitry I don't see how these features would require any pinout changes. Delaying the scan and adding the extra colours to SHIFTER would be another matter. If Atari would make this MMU then scrolling would improve right across the ST range. +-----------------------------------------------------------------------------+ ! DISCLAIMER: Unless otherwise stated, the above comments are entirely my own ! ! ! ! Neil Forsyth JANET: neil@uk.ac.hw.cs ! ! Dept. of Computer Science ARPA: neil@cs.hw.ac.uk ! ! Heriot-Watt University UUCP: ..!ukc!cs.hw.ac.uk!neil ! ! Edinburgh, Scotland, UK "spam spaM spAM sPAM SPAM, lovely SPAM" ! +-----------------------------------------------------------------------------+
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!purdue!bu-cs!bloom-beacon!eru!luth!sunic!mcsun!ukc!edcastle!hwcs!neilShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!purdue!bu-cs!bloom-beacon!eru!luth!sunic!mcsun!ukc!edcastle!hwcs!neil From: neil@cs.hw.ac.uk (Neil Forsyth) Newsgroups: comp.sys.atari.st Subject: Video pointer Keywords: Scrolling, MMU Message-ID: <3846@brahma.cs.hw.ac.uk> Date: 30 Nov 89 14:59:55 GMT Organization: Computer Science, Heriot-Watt U., Scotland Lines: 21