2017-12-20 18:07:23 +00:00
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html>
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<head>
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<title>AppleWin Debugger Tutorial</title>
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<meta http-equiv="CONTENT-TYPE" content="text/html; charset=windows-1252">
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</head>
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<body style="DIRECTION: ltr" lang="en-US">
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<h2></a><a name="Debugger Screen Layout"></a>Debugger Screen Layout</h2>
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<p>This section gives an overview of the debugger's screen layout.</p>
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<p>Here's a typical debugger view (with annotations describing the parts):</p>
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<img src="img/debugger-layout-annotated.png" hspace="5" vspace="5">
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<h3><a name="Soft-switches"></a>Soft-switches</h3>
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<p>This encodes information about the video and MMU soft-switches.</p>
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<p>The first 5 rows describe the current <b>video</b> settings and can be interpreted as follows:
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<ul>
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<li>50: $C050 - GR /TEXT (inverse indicates which is active)
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<li>52: $C052 - FULL/MIX (inverse indicates which is active)
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<li>54: $C054 - PAGE 1/2 (inverse indicates which is active)
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<li>56: $C056 - LO/HIRES (inverse indicates which is active)
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<li>5E: $C05E - DHGR/HGR (inverse indicates which is active)
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</ul>
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</p>
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<p>The next 6 rows describe the current <b>MMU</b> settings and can be interpreted as follows:
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<ul>
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<li>00: $C000 - 80Sto0/1 (inverse indicates state of 80STORE)
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<li>02: $C002-C005: Rm/xWm/x (NB. 'R' is blue and 'W' is red for readability)
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<ul>
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<li>Rm Read from main mem for $0200-$BFFF; Use OUT C002 to enable
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<li>Rx Read from aux mem for $0200-$BFFF; Use OUT C003 to enable
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<li>Wm Write to main mem for $0200-$BFFF; Use OUT C004 to enable
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<li>Wx Write to aux mem for $0200-$BFFF; Use OUT C005 to enable
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</ul>
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<li>0C: $C00C - Col40/80 (inverse indicates state of 80COL)
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<li>0E: $C00E - ASC/MOUS (inverse indicates state of ALTCHARSET)
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<li>80: $C080-C087: B2/M R/W (Language Card Bank2)
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2019-10-24 18:56:20 +00:00
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<ul>
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<li>A red 'x' if ALTZP (and Alt Language Card) is set by a write to $C009.
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</ul>
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2018-12-08 13:29:48 +00:00
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<li>88: $C088-C08F: B1/M rNN (Language Card Bank1 and RamWorks 64K bank number)
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2017-12-20 18:07:23 +00:00
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<ul>
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<li>'B2' or 'B1' is inverse when that LC bank is enabled.
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<li>If 'M' is inverse: ROM is active for reading.
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<li>If 'M' is not inverse: LC2 or LC1 RAM is active.
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<li>If 'W' is inverse: RAM is write enabled.
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<li>If 'W' is not inverse: RAM is write protected.
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2018-12-08 13:29:48 +00:00
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<li>'rNN' will appear if a RamWorks 64K bank is active.
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2018-10-31 22:04:42 +00:00
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<li>'sNN' will appear if a Saturn 16K bank is active.
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2017-12-20 18:07:23 +00:00
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</ul>
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</ul>
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</p>
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<p style="MARGIN-BOTTOM: 0in"><br>
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</p>
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</body>
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</html>
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