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annotate defs/atarivtio.d @ 3167:33f8afc79af2

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Create new clock mc09clock_91hz for Carsten's over-clocked mc09
author Neal Crook <foofoobedoo@gmail.com>
date Sat, 08 Apr 2017 20:26:29 +0100
parents 31cd1f1b4fb0
children
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1 IFNE ATARIVTIO.D-1
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2 ATARIVTIO.D SET 1
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3
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4 ********************************************************************
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5 * VTIO Defs for the Atari XE/XL
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6 * Everything that the VTIO driver needs is defined here, including
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7 * static memory definitions
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8
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9 * Constant Definitions
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10 KBufSz EQU 8 circular buffer size
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13 * Driver Static Memory
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14 ORG V.SCF
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15 V.CurRow RMB 1
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16 V.CurCol RMB 1
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17 V.CurChr RMB 1 character under the cursor
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31cd1f1b4fb0 Added ClrScrn and CapsLock functionality for Atari VTIO
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18 V.CapsLck RMB 1 caps lock flag
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19 V.KySns RMB 1 key sense flags
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d1ea3dc90082 More progress... now booting with DriveWire
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20 V.EscCh1 RMB 2 escape vector handler
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21 V.EscVect RMB 2 escape vector handler
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22 V.IBufH RMB 1 input buffer head
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23 V.IBufT RMB 1 input buffer tail
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24 V.InBuf RMB KBufSz input buffer
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25 RMB 250-.
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26 V.Last EQU .
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27
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28 ENDC