heh thats way more work than a plug in emulator good luck on it
On 7/11/2015 2:49 PM, Jay Jaeger wrote: > Oh, yeah I get it - an in circuit emulator. With my logic analyzer I > can also watch all the bus transactions (or directly on the CPU if needs > be) to see what is going on, as well. > > I have an Intel MDS IV with an ICE for (IIRC) an 8051, but have never > used it for that purpose to date. > > JRJ > > On 7/11/2015 2:42 PM, wulfman wrote: >> no not a software emulator a hardware emulator you remove the Z80 and >> plug in a cable >> lets you step through the code test memory and run the board at full speed >> hardware emulators are for the debugging of the hardware. >> >> unlike software emulators that run on a host PC that let you run old >> software >> >> i have a ZAX Z80 emulator and a Applied microsystems Z80 emulator for >> just that purpose >> >> On 7/11/2015 8:32 AM, Jay Jaeger wrote: >>> I use emulators as well, and have written some, but I also enjoy working >>> with the real hardware. >>> >>> The Altos ACS-8000 series are all Z80's . >>> >>> JRJ >>> >>> On 7/10/2015 10:05 PM, wulfman wrote: >>>> On 7/10/2015 7:50 PM, Jay Jaeger wrote: >>>>> Long story, but.... >>>>> >>>>> I recently acquired an Altos ACS 8000-2 with an 8100-01 mainboard (which >>>>> currently is not functioning). Acquired it on eBay where it was >>>>> represented as an ACS-8000-7, along with an Altos 8000-7A 29MB hard disk >>>>> (a Shugart 4008). The hard disk was fine, but the computer wasn't the >>>>> one shown in the photo. (I arranged for a partial refund. At least the >>>>> disk was the one in the photo. ;) ). >>>>> >>>>> I was wondering if anyone had an 8200 mainboard (the one with the logic >>>>> for the hard disk on it) that they would be willing to sell at an >>>>> affordable price? >>>>> >>>>> Also, I have a second Shugart 4008 hard disk, but it was configured for >>>>> 50Hz - so the motor pulley is the wrong size. Anyone out there have a >>>>> dead 4008 that they would be willing to have part with its motor pulley >>>>> and belt (and get the 50Hz set in return)? (For example, I saw a >>>>> posting on youtube with a wobbly platter set that probably is a good >>>>> candidate... ;) ). >>>>> >>>>> Any tips on troubleshooting the mainboard on a double density Altos 8000 >>>>> computer (mainboard 8100) would also be appreciated. I have already >>>>> reseated the chips, polished the tarnish off some chips the apparently >>>>> had silver-plated pins, etc., to no avail. Have dumped the ROM (2708). >>>>> Next plan is to disassemble that, and slap a logic analyzer on "J2" >>>>> which has all of the bus signals on it. >>>>> >>>>> Thanks in advance... >>>>> >>>>> JRJ >>>>> >>>> This is why i collect cpu emulators. I have almost every kind made. I do >>>> however need some jumper headers for a 68000 HMI unit >>>> thats set for 68008 mode but thats another story. >>>> >>>> >>>> what main CPU does this use, 8080 or a Z80 or ??? >>>> >>>> >>>> >> -- The contents of this e-mail and any attachments are intended solely for the use of the named addressee(s) and may contain confidential and/or privileged information. Any unauthorized use, copying, disclosure, or distribution of the contents of this e-mail is strictly prohibited by the sender and may be unlawful. If you are not the intended recipient, please notify the sender immediately and delete this e-mail.
