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@ -212,6 +212,10 @@ |
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<ul class="nav flex-column"> |
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</ul> |
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</li> |
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<li class="nav-item" data-bs-level="2"><a href="#n8-pc" class="nav-link">N8 PC</a> |
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<ul class="nav flex-column"> |
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</ul> |
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</li> |
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<li class="nav-item" data-bs-level="2"><a href="#rcbus-z80" class="nav-link">RCBus Z80</a> |
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<ul class="nav flex-column"> |
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<li class="nav-item" data-bs-level="3"><a href="#rcbus-z80-cpu-module" class="nav-link">RCBus Z80 CPU Module</a> |
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@ -396,7 +400,7 @@ |
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<p><strong>RomWBW Hardware</strong> \ |
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Version 3.6 \ |
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Wayne Warthen (<a href="mailto:wwarthen@gmail.com">wwarthen@gmail.com</a>) \ |
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25 Nov 2025</p> |
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30 Nov 2025</p> |
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<h1 id="overview">Overview</h1> |
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<h2 id="supported-platforms">Supported Platforms</h2> |
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<p>This section contains a summary of the system configuration target for |
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@ -737,6 +741,12 @@ external bank switching.</p> |
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<td style="text-align: right;">115200</td> |
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</tr> |
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<tr> |
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<td><a href="#n8-pc">N8 PC</a><sup>10</sup></td> |
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<td>ISA</td> |
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<td>N8PC_std.rom</td> |
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<td style="text-align: right;">38400</td> |
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</tr> |
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<tr> |
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<td><a href="#nabu-w-romwbw-option-board">NABU w/ RomWBW Option Board</a><sup>5</sup></td> |
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<td>NABU</td> |
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<td>NABU_std.rom</td> |
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@ -788,7 +798,8 @@ external bank switching.</p> |
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<sup>6</sup>Designed by Alan Cox<br /> |
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<sup>7</sup>Designed by Doug Jackson<br /> |
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<sup>8</sup>Designed by Dean Netherton<br /> |
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<sup>9</sup>MSX Port by Henk Berends</p> |
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<sup>9</sup>MSX Port by Henk Berends<br /> |
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<sup>10</sup>Designed by Dan Werner</p> |
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<h2 id="general-guidance">General Guidance</h2> |
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<p>The standard ROM images will detect and install support for certain |
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devices and peripherals that are on-board or frequently used with each |
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@ -2028,6 +2039,72 @@ additional boards are required.</p> |
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<ul> |
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<li>SD Card interface is configured for CSIO (N8 date code >= 2312)</li> |
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</ul> |
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<h2 id="n8-pc">N8 PC</h2> |
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<p>This is a variant of the N8 computer.</p> |
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<ul> |
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<li>Creator: Dan Werner</li> |
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<li>Project GitHub: <a href="https://github.com/danwerner21/N8PC">N8 PC</a></li> |
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</ul> |
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<h4 id="rom-image-file-n8pc_stdrom">ROM Image File: N8PC_std.rom</h4> |
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<table> |
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<thead> |
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<tr> |
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<th></th> |
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<th></th> |
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</tr> |
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</thead> |
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<tbody> |
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<tr> |
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<td>Bus</td> |
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<td>ISA</td> |
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</tr> |
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<tr> |
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<td>Default CPU Speed</td> |
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<td>9.216 MHz</td> |
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</tr> |
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<tr> |
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<td>Interrupts</td> |
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<td>None</td> |
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</tr> |
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<tr> |
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<td>System Timer</td> |
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<td>Z180</td> |
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</tr> |
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<tr> |
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<td>Serial Default</td> |
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<td>38400 Baud</td> |
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</tr> |
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<tr> |
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<td>Memory Manager</td> |
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<td>N8</td> |
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</tr> |
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<tr> |
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<td>ROM Size</td> |
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<td>512 KB</td> |
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</tr> |
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<tr> |
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<td>RAM Size</td> |
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<td>512 KB</td> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_16">Supported Hardware</h4> |
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<ul> |
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<li>PKD: IO=132, SIZE=8X1</li> |
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<li>M6242RTC: IO=160</li> |
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<li>ASCI: IO=64</li> |
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<li>ASCI: IO=65</li> |
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<li>TMS: MODE=N8PC, IO=152, SCREEN=80X24, KEYBOARD=KBD</li> |
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<li>KBD: ENABLED</li> |
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<li>MD: TYPE=RAM</li> |
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<li>MD: TYPE=ROM</li> |
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<li>FD: MODE=N8, IO=140, DRIVE 0, TYPE=3.5” HD</li> |
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<li>FD: MODE=N8, IO=140, DRIVE 1, TYPE=3.5” HD</li> |
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<li>PPIDE: MODE=STD, IO=132, MASTER</li> |
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<li>PPIDE: MODE=STD, IO=132, SLAVE</li> |
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<li>AY38910: MODE=N8, IO=156, CLOCK=3579545 HZ</li> |
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</ul> |
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<h4 id="notes_6">Notes:</h4> |
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<h2 id="rcbus-z80">RCBus Z80</h2> |
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<h3 id="rcbus-z80-cpu-module">RCBus Z80 CPU Module</h3> |
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<p>Generic Rom Image.</p> |
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@ -2074,7 +2151,7 @@ additional boards are required.</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_16">Supported Hardware</h4> |
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<h4 id="supported-hardware_17">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -2147,7 +2224,7 @@ additional boards are required.</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_17">Supported Hardware</h4> |
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<h4 id="supported-hardware_18">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -2230,7 +2307,7 @@ single module, thus saving space on the backplane.</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_18">Supported Hardware</h4> |
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<h4 id="supported-hardware_19">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -2317,7 +2394,7 @@ of the RAM is reserved to act as ROM.</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_19">Supported Hardware</h4> |
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<h4 id="supported-hardware_20">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -2401,7 +2478,7 @@ layout. The intent to replace the STD config with the RAM config.</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_20">Supported Hardware</h4> |
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<h4 id="supported-hardware_21">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -2483,7 +2560,7 @@ specifically for ROM-less RomWBW. HBIOS is loaded from disk at boot</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_21">Supported Hardware</h4> |
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<h4 id="supported-hardware_22">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -2606,7 +2683,7 @@ to RAM location \$0000, which in turn starts execution of RomWBW.</p> |
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decompression program is stored.</p> |
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</li> |
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</ul> |
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<h4 id="supported-hardware_22">Supported Hardware</h4> |
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<h4 id="supported-hardware_23">Supported Hardware</h4> |
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<ul> |
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<li>DSRTC: MODE=STD, IO=192</li> |
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<li>SIO MODE=STD, IO=8, CHANNEL A, INTERRUPTS ENABLED</li> |
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@ -2669,7 +2746,7 @@ replacing the older K80W rev 1</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_23">Supported Hardware</h4> |
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<h4 id="supported-hardware_24">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -2745,7 +2822,7 @@ external memory management)</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_24">Supported Hardware</h4> |
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<h4 id="supported-hardware_25">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>DSRTC: MODE=STD, IO=12</li> |
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@ -2820,7 +2897,7 @@ management)</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_25">Supported Hardware</h4> |
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<h4 id="supported-hardware_26">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>DSRTC: MODE=STD, IO=12</li> |
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@ -2905,7 +2982,7 @@ RomWBW image from CF disk, then start RomWBW from 0x0</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_26">Supported Hardware</h4> |
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<h4 id="supported-hardware_27">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>DSRTC: MODE=STD, IO=12</li> |
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@ -2980,7 +3057,7 @@ external memory management)</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_27">Supported Hardware</h4> |
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<h4 id="supported-hardware_28">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -3056,7 +3133,7 @@ management)</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_28">Supported Hardware</h4> |
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<h4 id="supported-hardware_29">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -3146,7 +3223,7 @@ of the RAM is reserved to act as ROM.</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_29">Supported Hardware</h4> |
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<h4 id="supported-hardware_30">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -3230,7 +3307,7 @@ layout. The intent to replace the STD config with the RAM config.</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_30">Supported Hardware</h4> |
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<h4 id="supported-hardware_31">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -3314,7 +3391,7 @@ EPROM for other computers</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_31">Supported Hardware</h4> |
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<h4 id="supported-hardware_32">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -3400,7 +3477,7 @@ available from the manufacturer today</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_32">Supported Hardware</h4> |
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<h4 id="supported-hardware_33">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>LCD: IO=218, SIZE=20X4</li> |
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@ -3473,7 +3550,7 @@ Graphics Display Controller</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_33">Supported Hardware</h4> |
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<h4 id="supported-hardware_34">Supported Hardware</h4> |
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<ul> |
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<li>DSRTC: MODE=STD, IO=132</li> |
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<li>ASCI: IO=64</li> |
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@ -3542,7 +3619,7 @@ slave as defined by the IEEE-696 specs.</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_34">Supported Hardware</h4> |
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<h4 id="supported-hardware_35">Supported Hardware</h4> |
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<ul> |
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<li>INTRTC: ENABLED</li> |
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<li>PLDSER: IO=172</li> |
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@ -3561,7 +3638,7 @@ slave as defined by the IEEE-696 specs.</p> |
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<li>PPIDE: MODE=S100B, IO=48, SLAVE</li> |
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<li>SD: MODE=SC, IO=12, UNITS=1</li> |
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</ul> |
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<h4 id="notes_6">Notes:</h4> |
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<h4 id="notes_7">Notes:</h4> |
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<ul> |
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<li>Z180 SBC SW2 (IOBYTE) Dip Switches:</li> |
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</ul> |
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@ -3665,7 +3742,7 @@ system.</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_35">Supported Hardware</h4> |
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<h4 id="supported-hardware_36">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=13, SWIO=0</li> |
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<li>DSRTC: MODE=STD, IO=12</li> |
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@ -3693,7 +3770,7 @@ system.</p> |
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<li>PPIDE: IO=32, SLAVE</li> |
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<li>SD: MODE=SC, IO=12, UNITS=1</li> |
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</ul> |
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<h4 id="notes_7">Notes:</h4> |
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<h4 id="notes_8">Notes:</h4> |
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<ul> |
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<li>When disabled, watchdog requires /IM to be pulsed. If an RCBus module |
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holds the CPU in WAIT for more than this, the watchdog will fire when |
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@ -3749,7 +3826,7 @@ RomWBW (and CP/M)</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_36">Supported Hardware</h4> |
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<h4 id="supported-hardware_37">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0, SWIO=0</li> |
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<li>DSRTC: MODE=STD, IO=12</li> |
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@ -3827,7 +3904,7 @@ RomWBW (and CP/M)</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_37">Supported Hardware</h4> |
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<h4 id="supported-hardware_38">Supported Hardware</h4> |
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<ul> |
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<li>INTRTC: ENABLED</li> |
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<li>ASCI: IO=192, INTERRUPTS ENABLED</li> |
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@ -3885,7 +3962,7 @@ RomWBW (and CP/M)</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_38">Supported Hardware</h4> |
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<h4 id="supported-hardware_39">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=160, SWIO=160</li> |
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<li>DSRTC: MODE=STD, IO=12</li> |
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@ -3963,7 +4040,7 @@ RomWBW (and CP/M)</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_39">Supported Hardware</h4> |
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<h4 id="supported-hardware_40">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=160, SWIO=160</li> |
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<li>DSRTC: MODE=STD, IO=12</li> |
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@ -4046,7 +4123,7 @@ RomWBW (and CP/M)</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_40">Supported Hardware</h4> |
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<h4 id="supported-hardware_41">Supported Hardware</h4> |
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<ul> |
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<li>FP: LEDIO=0</li> |
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<li>LCD: IO=170, SIZE=20X4</li> |
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@ -4132,7 +4209,7 @@ presented by John’s Basement on youTube)</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_41">Supported Hardware</h4> |
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<h4 id="supported-hardware_42">Supported Hardware</h4> |
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<ul> |
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<li>SIO MODE=Z80R, IO=128, CHANNEL A, INTERRUPTS ENABLED</li> |
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<li>SIO MODE=Z80R, IO=128, CHANNEL B, INTERRUPTS ENABLED</li> |
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@ -4192,7 +4269,7 @@ compatible with N8VEM SBC and Disk I/O boards.</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_42">Supported Hardware</h4> |
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<h4 id="supported-hardware_43">Supported Hardware</h4> |
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<ul> |
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<li>DSRTC: MODE=STD, IO=112</li> |
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<li>UART: IO=104</li> |
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@ -4203,7 +4280,7 @@ compatible with N8VEM SBC and Disk I/O boards.</p> |
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<li>MD: TYPE=ROM</li> |
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<li>FD: MODE=DIO, IO=54, DRIVE 0, TYPE=3.5” HD</li> |
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</ul> |
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<h4 id="notes_8">Notes:</h4> |
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<h4 id="notes_9">Notes:</h4> |
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<ul> |
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<li>If ParPortProp is installed, initial console output is determined by |
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JP1:</li> |
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@ -4269,7 +4346,7 @@ is made using CMOS technology and more power efficient than FDC9266</p> |
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</tr> |
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</tbody> |
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</table> |
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<h4 id="supported-hardware_43">Supported Hardware</h4> |
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<h4 id="supported-hardware_44">Supported Hardware</h4> |
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<ul> |
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<li>DSRTC: MODE=STD, IO=112</li> |
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<li>UART: IO=104</li> |
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@ -4282,7 +4359,7 @@ is made using CMOS technology and more power efficient than FDC9266</p> |
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<li>CTC: IO=32, TIMER MODE=COUNTER, DIVISOR=18432, HI=256, LO=72, |
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INTERRUPTS ENABLED</li> |
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</ul> |
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<h4 id="notes_9">Notes:</h4> |
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<h4 id="notes_10">Notes:</h4> |
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<ul> |
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<li>If ParPortProp is installed, initial console output is determined by |
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JP1:</li> |
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@ -4638,6 +4715,10 @@ the active platform and configuration.</p> |
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<td>DS12RTC</td> |
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<td>Dallas Semiconductor DS1288x Real-Time Clock w/ NVRAM</td> |
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</tr> |
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<tr> |
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<td>M6242</td> |
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<td>MSM6242 Real-Time Clock (no NVRAM)</td> |
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</tr> |
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</tbody> |
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</table> |
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<h2 id="dsky-display-keypad">DsKy (DiSplay KeYpad)</h2> |
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