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- Newsgroups: comp.sys.ibm.pc,comp.periphs
- Subject: Re: Help with disk connector
- Summary: Toshiba PC support BBS
-
- In article <1020@adds.newyork.NCR.COM> kieran@adds.newyork.NCR.COM (Joe Cabana) writes:
- >... Toshiba 1200H portable ...
- >The only problem I have is I can't get the pinout for the external floppy
- >connector.
- >... a wireing diagram for a DB-25 to 34 pin
- >edge card cable ...
-
- All users of Toshiba PCs should take advantage of what I consider to be
- an excellent customer support system. The best part is that it's free!
-
- Toshiba operates a bulletin board dedicated to supporting their
- personal computer product line. The phone number is 714-837-4408
- and they support 300/1200/2400 bps. Two of the files that you can
- download from this BBS are called 3100-IBM.TXT and OTHRCONN.TXT and
- they describe the disk drive cable and the connector pinouts, respectively.
- For your enjoyment, they are included below:
-
- ------- File 3100-IBM.TXT
-
- 1100+ or 3100 to IBM Floppy Disk
-
- Male DB-25 to 34 pin Card Edge connector
-
- 1 33 & 34
- 2 8
- 3 26
- 4 28
- 5 30
- 6 to 9 nc
- 10 12
- 11 16
- 12 22
- 13 24
- 14 nc
- 15 32
- 16 18
- 17 20
- 18 to 25 All odd pins
-
- -------- File OTHRCONN.TXT
-
- RGB Connector
-
- 1 & 2 Ground
- 3 Red
- 4 Green
- 5 Blue
- 6 Intensity
- 7 Not Used
- 8 Horizantal Sync
- 9 Vertical Sync
-
-
- Printer Port | Floppy Port
- |
- 1 Strobe O | 1 External drive Ready I
- 2 Data 0 O | 2 Index I
- 3 Data 1 O | 3 Track 0 I
- 4 Data 2 O | 4 Write Protected I
- 5 Data 3 O | 5 Read Data I
- 6 Data 4 O | 6 Disk Change I
- 7 Data 5 O | 7-9 Not Used
- 8 Data 6 O | 10 Drive Select -B O
- 9 Data 7 O | 11 Motor On -B O
- 10 Ack I | 12 Write Data O
- 11 Busy I | 13 Write Enable O
- 12 Paper End I | 14 300 Kbps Data Rate O
- 13 Select I | 15 Side Select O
- 14 Auto Feed O | 16 Direction O
- 15 Error I | 17 Step O
- 16 Printer Init O | 18-25 Ground
- 17 Select In O |
- 18-25 Ground |
-
- --------
-
- Make sure your disk drive is jumpered as drive "B" (DS1).
-
- I took this one step further with my 3100. The controller in the
- 3100 will support 1.2MB drives, so I added the extra wire between
- DB25 pin 14 and edge connector pin 2. I mounted two drives in one
- box and set up a toggle switch on the drive-select line to switch
- between the 360K and 1.2M drives. When switching between drives
- you also need to run the Toshiba-supplied TEST program and change the
- setup for the second diskette drive.
-
- Good luck!
-
- --
- Bob Hoffman, N3CVL {allegra, bellcore, cadre, idis, psuvax1}!pitt!hoffman
- Pitt Computer Science hoffman@vax.cs.pittsburgh.edu
-