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5616 - Revision history
2026-07-29T20:48:51Z
Revision history for this page on the wiki
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RHansen: Updated with more details after reverse-engineering the firmware
2026-07-29T12:51:17Z
<p>Updated with more details after reverse-engineering the firmware</p>
<a href="https://www.ndwiki.org/index.php?title=5616&diff=7880&oldid=7877">Show changes</a>
RHansen
https://www.ndwiki.org/index.php?title=5616&diff=7877&oldid=prev
RHansen: not a stub
2026-07-29T10:57:29Z
<p>not a stub</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:57, 29 July 2026</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''5616''' is the Samson ACCess Processor module, abbreviated ACCP. Its product number is ND-324716.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''5616''' is the Samson ACCess Processor module, abbreviated ACCP. Its product number is ND-324716.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">{{Stub}}</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Introduction==</div></td></tr>
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RHansen
https://www.ndwiki.org/index.php?title=5616&diff=7876&oldid=prev
RHansen: New page about the ACCP board
2026-07-29T10:56:57Z
<p>New page about the ACCP board</p>
<p><b>New page</b></p><div>'''5616''' is the Samson ACCess Processor module, abbreviated ACCP. Its product number is ND-324716.<br />
<br />
{{Stub}}<br />
<br />
==Introduction==<br />
<br />
The 5616 is a baby module used in Samson-based ND-5000 systems.<br />
<br />
The module contains:<br />
<br />
* The access processor<br />
* The ND OctoBus controller<br />
<br />
A terminal can be connected to the ACCP console through a plug board at the rear of the card crate. The connection uses RS-232.<br />
<br />
From the ACCP command prompt, commands can be entered for:<br />
<br />
* Debugging<br />
* Status inspection<br />
* Hardware testing<br />
* System diagnostics<br />
<br />
The ND-324716 is a newer version of the earlier [[5602|ND-324702 ACCP module]].<br />
<br />
==Characteristics==<br />
<br />
* PCB number: 5616<br />
* Product number: ND-324716<br />
* Module name: Samson ACCess Processor<br />
* Abbreviation: ACCP<br />
* Module type: Baby module<br />
* PCB version: A2<br />
* ECO level: 8<br />
* Release date: 5 January 1990<br />
* PCB size: 197 × 96 mm<br />
* Processor: MC68000 or TS68000<br />
* SRAM capacity: 32 KB<br />
* EPROM capacity: 128 KB<br />
* LEDs: None<br />
* Switches: None<br />
<br />
==Functions==<br />
<br />
The module provides two principal functions:<br />
<br />
* Access processor functionality<br />
* Control of the ND OctoBus<br />
<br />
The access processor provides a console from which service and diagnostic commands can be entered.<br />
<br />
The console can be used for:<br />
<br />
* Debugging<br />
* Reading system status<br />
* Running tests<br />
* Performing diagnostic operations<br />
<br />
==System use==<br />
<br />
The module was used in several ND-5000 system configurations.<br />
<br />
* ND-320001, used in ND-5200 systems: first layer of baby modules<br />
* ND-320002, used in ND-5400, ND-5500 and ND-5700 systems: second layer of baby modules<br />
* ND-320003, used in ND-5800 and ND-5900 systems: second layer of baby modules<br />
<br />
==Memory==<br />
<br />
===Static RAM===<br />
<br />
The module contains four SRAM devices.<br />
<br />
* Device type: TC5565<br />
* Number of devices: 4<br />
* Capacity per device: 8192 × 8 bits<br />
* Total SRAM capacity: 32 KB<br />
<br />
===EPROM===<br />
<br />
The module contains two EPROM devices used for microprogram storage.<br />
<br />
* Number of devices: 2<br />
* Capacity per device: 65536 × 8 bits<br />
* Total EPROM capacity: 128 KB<br />
* EPROM 51200L<br />
* EPROM 51201L<br />
<br />
==Chipset==<br />
<br />
The following components are known to be fitted to PCB 5616.<br />
<br />
===Processor===<br />
<br />
* '''MC68000''' or '''TS68000''' — access processor CPU<br />
<br />
===OctoBus controller===<br />
<br />
* '''NDOBCON''' — Norsk Data OctoBus controller<br />
<br />
===Programmable logic===<br />
<br />
* '''50600B''' — PAL<br />
* '''50700A''' — PAL<br />
* '''50800A''' — PAL<br />
* '''50900A''' — PAL<br />
* '''51000B''' — PAL<br />
* '''51100C''' — PAL<br />
<br />
===Microprogram storage===<br />
<br />
* '''51200L''' — microprogram EPROM<br />
* '''51201L''' — microprogram EPROM<br />
<br />
===Static RAM===<br />
<br />
* '''TC5565''' — SRAM, four devices<br />
<br />
Each TC5565 device has a capacity of 8192 × 8 bits. The four devices provide a total SRAM capacity of 32 KB.<br />
<br />
==Switches and indicators==<br />
<br />
===LEDs===<br />
<br />
None.<br />
<br />
===Switches===<br />
<br />
None.<br />
<br />
===Straps===<br />
<br />
The module has five straps associated with the ECO level.<br />
<br />
* Strap 0: ECO level<br />
* Strap 1: ECO level<br />
* Strap 2: ECO level<br />
* Strap 3: ECO level<br />
* Strap 4: ECO level<br />
<br />
==Connectors==<br />
<br />
The module has intra-module connectors used for connection to:<br />
<br />
* The Samson motherboard<br />
* Other baby modules<br />
<br />
The ACCP console connection is provided through a plug board at the rear of the card crate.<br />
<br />
A terminal can be connected to the ACCP console using an RS-232 cable.<br />
<br />
==I/O devices on the card==<br />
<br />
The module does not provide a conventional external I/O device interface directly on the PCB.<br />
<br />
Console access is provided through the separate ACCP console plug board at the rear of the card crate.<br />
<br />
==PCB versions==<br />
<br />
The known PCB version is:<br />
* A2<br />
<br />
==ECO==<br />
<br />
ECO, or Engineering Change Order, identifies a hardware revision or modification.<br />
<br />
The documented board (http://sintran.com/hardware/nd-5000/nd-324716.html) has:<br />
<br />
* PCB version: A2<br />
* ECO level: 8<br />
<br />
The ECO level is represented by straps 0 through 4.<br />
<br />
==Reference==<br />
<br />
* Sintran Data, ''Norsk Data hardware - ND-5000'', section 1.4.1.8, “324716 - PCB 5616 - Samson ACCess Processor (ACCP) module”<br />
<br />
[[Category:ND-5000 hardware]]</div>
RHansen