view defs/atarivtio.d @ 2652:32908c617568

Now pressing a key quits demo sound temporarily rts's until we figure out PIC code
author Boisy Pitre <boisy.pitre@nuance.com>
date Mon, 02 Apr 2012 21:54:25 -0500
parents d1ea3dc90082
children 31cd1f1b4fb0
line wrap: on
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              IFNE      ATARIVTIO.D-1
ATARIVTIO.D   SET       1

********************************************************************
* VTIO Defs for the Atari XE/XL
* Everything that the VTIO driver needs is defined here, including
* static memory definitions

* Constant Definitions
KBufSz    EQU       8                   circular buffer size


* Driver Static Memory
          ORG       V.SCF
V.CurRow  RMB       1
V.CurCol  RMB       1
V.CurChr  RMB       1                   character under the cursor
V.KySns   RMB       1                   key sense flags
V.EscCh1  RMB       2                   escape vector handler
V.EscVect RMB       2                   escape vector handler
V.IBufH   RMB       1                   input buffer head
V.IBufT   RMB       1                   input buffer tail
V.InBuf   RMB       KBufSz              input buffer
          RMB       250-.
V.Last    EQU       .

          ENDC