view defs/atarivtio.d @ 2624:b8c7b7fbf3c9

Major changes: o os9defs, rbfdefs, scfdefs now os9.d, rbf.d, and scf.d o vtiodefs now broken into cocovtio.d (for coco and dragon) and atarivtio.d o systype now broken into coco.d, dragon.d and atari.d o all references to the above in other files have changed
author Boisy Pitre <boisy.pitre@nuance.com>
date Fri, 24 Feb 2012 08:51:08 -0600
parents
children d1ea3dc90082
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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.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