http://tech.groups.yahoo.com/group/hpseries80/ HP Series 80 Sat, 07 Nov 2009 18:18:14 GMT Alan Melia http://tech.groups.yahoo.com/group/hpseries80/message/197 http://tech.groups.yahoo.com/group/hpseries80/message/197 Hi John if that is a gpib program for control I am guessing one of two "equipment" people on the hp-agilent group might be interested in that image as well. Sat, 07 Nov 2009 01:24:08 GMT john_vc2004 http://tech.groups.yahoo.com/group/hpseries80/message/196 http://tech.groups.yahoo.com/group/hpseries80/message/196 Hi, I bought a 89050A module a few months ago. I was delighted to find that inside the case it is a 82929A Programmable ROM Module fitted with one EPROM. I've Thu, 15 Oct 2009 15:34:00 GMT Everett Kaser http://tech.groups.yahoo.com/group/hpseries80/message/195 http://tech.groups.yahoo.com/group/hpseries80/message/195 j_amodio wrote... ... Apple Mac Mini... an HP-85 in a small box, with 'modern' video and USB connectors (and maybe SD memory slot). Just plug in a keyboard, Thu, 15 Oct 2009 14:29:51 GMT j_amodio http://tech.groups.yahoo.com/group/hpseries80/message/194 http://tech.groups.yahoo.com/group/hpseries80/message/194 Hi Everett, don't tempt me !!! one of the crazy ideas I put on my list some time ago was like what if I take out the complete CPU board and replace it by Thu, 15 Oct 2009 14:04:12 GMT j_amodio http://tech.groups.yahoo.com/group/hpseries80/message/193 http://tech.groups.yahoo.com/group/hpseries80/message/193 Hi Steve, let me combine the response to your last two messages. There are two different "ROM drawers" for the HP Series 80, the most common and perhaps more Thu, 15 Oct 2009 08:06:46 GMT Steve Rooke http://tech.groups.yahoo.com/group/hpseries80/message/192 http://tech.groups.yahoo.com/group/hpseries80/message/192 Hi again Jorge, You have confirmed my findings on this. Now, if the ROM Drawer has no logic on the board, is the EPROM Drawer similar or does it have a lot of Thu, 15 Oct 2009 08:03:11 GMT Steve Rooke http://tech.groups.yahoo.com/group/hpseries80/message/191 http://tech.groups.yahoo.com/group/hpseries80/message/191 Hi Jorge, That sounds very interesting and it sounds like a good way to impliment this. In my case there is no need for the HP-IB interface as it's already Thu, 15 Oct 2009 07:54:02 GMT Steve Rooke http://tech.groups.yahoo.com/group/hpseries80/message/190 http://tech.groups.yahoo.com/group/hpseries80/message/190 As I understand it with a bit of googling around, these are not just simple EPROMs and so that does not look like a way of adding ROMS to the ROM Drawer. Steve Thu, 15 Oct 2009 07:52:02 GMT Steve Rooke http://tech.groups.yahoo.com/group/hpseries80/message/189 http://tech.groups.yahoo.com/group/hpseries80/message/189 Hi Ash, That's very encouraging news for me as I'm sure there will be a myriad of questions I will need answered as soon as I really get going with this Thu, 15 Oct 2009 03:48:59 GMT Everett Kaser http://tech.groups.yahoo.com/group/hpseries80/message/188 http://tech.groups.yahoo.com/group/hpseries80/message/188 j_amodio wrote... ... Hmmm... maybe after you finish that project, you can start implementing a new version of the 85 CPU? Then you can just build a whole new Thu, 15 Oct 2009 02:41:48 GMT j_amodio http://tech.groups.yahoo.com/group/hpseries80/message/187 http://tech.groups.yahoo.com/group/hpseries80/message/187 Thanks for the information Ash, don't know if you saw my project page but finally I managed to put something together to extend the bus with a flat cable: Wed, 14 Oct 2009 23:05:27 GMT ash_chook http://tech.groups.yahoo.com/group/hpseries80/message/186 http://tech.groups.yahoo.com/group/hpseries80/message/186 Hi Jorge, The I/O extender diving board part has HP number 5060-5983 on it. This maybe just the PC so the whole assembly (with conector) may have a different Wed, 14 Oct 2009 15:35:31 GMT j_amodio http://tech.groups.yahoo.com/group/hpseries80/message/185 http://tech.groups.yahoo.com/group/hpseries80/message/185 Is not that simple as finding an EPROM with the right pinout. The expansion ROMs are a proprietary HP design that include part of the address decoding logic, Wed, 14 Oct 2009 15:28:17 GMT j_amodio http://tech.groups.yahoo.com/group/hpseries80/message/184 http://tech.groups.yahoo.com/group/hpseries80/message/184 I've been working in a project trying to emulate the functionality of several modules using an external microcontroller. Besides putting together a clone of Wed, 14 Oct 2009 15:02:02 GMT J. Forster http://tech.groups.yahoo.com/group/hpseries80/message/183 http://tech.groups.yahoo.com/group/hpseries80/message/183 I don't know about the calculators, but it's routinely done for other instruments. Some of the files are Intel Hex format which goes into EPROM programmers