On Mon, Jun 2, 2025 at 11:39 PM Richard Schauer via cctalk < [email protected]> wrote:
> On 2025-06-02 13:26, Bill Degnan via cctalk wrote: > > Do you know the controller model number? > > OK, I tore into mine tonight. Here's what I see. > > My machine is a PC 6300, the CPU 2 model. (I have three of these, and > another of them was marked CPU 3/X. Didn't check the third.) It was > built in 12/84 by Olivetti in Italy. > > The two cables from the drive enclosure go to DB-25 female connectors on > two separate cards. In fact, it appears that other than sharing an > enclosure and power supply, the two drives have nothing to do with each > other. > > The disk controller (marked with a red dot on the connector on my > machine) was made in 1987. It is a 1/3-length card, a WD1002A-WX1. > There are flying wire ends of a ribbon cable from the data and control > header plugs to the DB-25 connector, which is in a separate slot from > the card. Looks like a pretty standard MFM controller to me, not SCSI > in any way. > > The tape controller (marked with a green dot on the connector on my > machine) was made in 1986. It is a full-length card, a Wangtek > 30006-007 rev C. It has an 8085, 8257, 6264 SRAM, 2764 EPROM, what > appears to be a chipset of 2x CF40100BN, 1x CF40101N, and 1x CF40102N, > and some PALS marked Everex. I couldn't Google up what those CF4010... > ICs do very readily, although several sellers claim to have some. There > are two cards which are almost identical on Ebay right now, items > 393821606763 and 201549538949, although neither of them has the DB-25 > connector on the bracket. On mine it goes to a ribbon cable, which goes > into the header by means of flying wire ends. > > The drive enclosure is an AT&T Comcode 405117714 (I guess I'd take that > to be a model number, since there isn't any other), with FCC ID > CLP77N187072. It is made in USA and contains a 20 MB hard drive and a > 60 MB (or 67 MB according to the Iotamat tape I have in mine) tape > drive. > > It occurs to me that although I occasionally see AT&T 7300/3B1 systems, > I rarely see 6300s. Somehow I happened onto the three that I have a > long time ago and that was it. > > Richard KF9VP Thank you. I just happen to have my 6300 on the table. I have never had issues with it, never needed to open mine for service, or it has been many years. I have owned mine for over 20 years. Bill > >
