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I'm looking for the manual of this disk drive. I show its ASSY PCB here: https://www.dropbox.com/s/yxw7hww0azqz5nx/Drive%208inch%20BASF%206104%20OLD%20Model.jpg?dl=0 Thanks for any help. Enrico

I would like to implement CP / M or similar with DUAL SIDE DUAL DENSITY disk management and eventually a new BIOS on the following two boards: A) Clone Bigboard (MK83) equipped with 4MHz Z80A, 32x4116 RAM, Z80ASIO, 2x2716 EPROM and FDC 1797. The board has unknown firmware with entry table to...

Here in Italy in the years 1979-1981 some engineers created a computer based on the Z80 which was equipped with a pair of 8-inch drives. Recently I got to test them. To do this I connect them to my Ferguson Bigboard which has FDC 1771 and I try to read sectors of single density pre-recorded...

For my error on the + 24Vdc power supply, I have damaged the controller board of a BASF 6104 drive (ref. A). The manual of this drive can be found in the network and corresponds to 80307-048-BASF-6104-technical-manual (ref. B). JJ2 jumpers 1-2, 17-18 and 21-22 were inserted in this drive. I...

I have a couple of 8" drives Mitsubishi M2863 slim type that I recovered I think around 1990 total in excellent conditions with which I created images and written several floppy disks 8". For some reason, including my incompetence, both their spindle motor do not run any more. And powering...

I have an old computer without any documentation and without its keyboard. Checking the 16-pin flat cable connected to the keyboard connector cannon 25pin I find that: Cannon Pin Segnale 5 to Bit0 Z80BPIO 6 to Bit1 Z80BPIO 7 to Bit2 Z80BPIO 8 to Bit3...

Pls excuse for my poor english, i hope to can explain well the help i ask for. I have 2 older hard drives Conner CP-2024 one working and one not. It seems that the not working may have lost the mapping between physical and logical geometry. Is there a way to make it alive? I explain other I...

Hi, I would use this monitor to repair an old italian computer General Processor Model T. https://www.dropbox.com/s/1o5p686j7cz6mp1/Depliant%20Modello%20T.pdf?dl=0 However, the monitor works on 18400Hz instead of 15625Hz. Is there anyone who according to the diagrams I provide here knows how...

I'm trying to install a hard drive IBM H3256-A3 (manual here http://www.hgst.com/tech/techlib.nsf/techdocs/7BF937434F9F7BBC86256E900073460D/$file/oem3fspe.pdf ) in an IBM AT 286. I state that the motherboard 286 type 1 with a controller AB-862G SUPER MULTI I/O CARD and a pair of drive performs...

Hi all, I was intrigued on the addon board with cpu 8086 and his daughter with memory expansion for the xerox 820-II. Along with the machine 820-II constituted the xerox 16/8. Manual 610P72384_820-II_Technical_Reference_1984.pdf does not include pages from 121 to 150 in which they were...

Is there anybody who knows what is this old chip? And where to try to find it? If it help what I know is that it used to do somenting like shift data register or Serial Shift Registers. It has a TTL level signal on its pins, it has 14 pins. You can see it named U1 in the centre of this...

Hello everyone, I got a board Xerox 820-II without any other components and without disk controller. After changing the video sync and created a composite video on video i have the correct prompt. I made a keyboard interface to convert a PS2 keyboard in parallel with the same schematic that...

I'm using an assembler z80 by practicing to see if it can properly assemble the source code of my card Ferguson BigBoard I. At reset, the CPU executes a sequence inserted in his first 16 bytes : DI ROMRAM: LD HL,0010H LD DE,ROM LD BC,0800H...

Hi at all, perhaps the question might seem trivial, but anyone would know how to track Jim B. Ferguson & Russel Smith the persons who designed the Ferguson BigBoard 1 in 1980? Below some info i left on my website http://elazzerini.interfree.it/ Jim Ferguson, Russell Smith and I, Gordon...

I need for my Tandom TM100-1A in its latch plate assembly of the following object. http://vector-graphic.info/images/Tandon%20TM100%20doors.jpg Thanks for help. Enrico - Pisa- Italy

Hi all, The reason why I'm interested in this topic is that I recently restored a Ferguson Bigboard I with its CP/M 60K. I'd like to try different programs that are contained in third parts dischettes, but they are of course in a different formats. I am using ANADISK to identify the format...

Below the link where i left all info i know. http://elazzerini.interfree.it/MP-PC/index-en.htm Thanks for any kind of help especially on DOS Boot diskettes. Enrico

Hello everyone, this request is no deadline. Since It follows from the disease for the Vintage Computer hit me, I started to collect information on these systems by publishing on its website and http://elazzerini.interfree.it http://fergusonbigboard.altervista.org/ I'm looking for the...

Hi at all, i updated my website http://elazzerini.interfree.it about this SBC z80 based. Pls let me know suggestions, and also othe useful info. Regards Enrico