Re: Long VTech Floppy Drive Controller

["Bill Garber" <willy46pa@comcast.net>]

"Wayne Stewart" <waynes@telus.dotnet> wrote in message
news:yoU4c.171380$A12.149969@edtnps84...
: VTech UDC card 20 pin to 19 pin adapter
:
: The 19 pin connectors have the pins numbered.
: If you check the UDC card you should find the
: 20 pin connector numbered.
:
: 20 pin   19 pin
:
: 1 -------- 16
: 2 -------- 11
: 3 -------- 2
: 4 -------- 12
: 5 -------- 3
: 6 -------- 13
: 7 -------- 4
: 8 -------- 14
: 9 -------- 5
: 10 ------- 15
: 11 ------- 6
: 12 ------- NC
: 13 ------- 7
: 14 ------- 17
: 15 ------- 10
: 16 ------- 18
: 17 ------- 8
: 18 ------- 19
: 19 ------- 8
: 20 ------- NC
:
: Pins 12 and 20 on the 20 pin connector aren�t
: connected and pin 1 and 9 on the 19 pin
: connector aren�t connected.
:
: Wayne

If this is right, then a Disk II directly connected
to it would allow writing to a protected disk, and
Phase0 would not be grounded. Compare to Disk II to
DB-19 wiring below.

IDP-20 pins                DB-19 pins

 1  GND------------------->  1 GND
 2  PHASE 0---------------> 11 PHASE A
 3  GND------------------->  2 GND
 4  PHASE 1---------------> 12 PHASE B
 5  GND------------------->  3 GND
 6  PHASE 2---------------> 13 PHASE C
 7  GND------------------->  4 GND
 8  PHASE 3---------------> 14 PHASE D
 9  -12 V----------------->  5  -12V
10  WRITE REQ-------------> 15 WRITE REQ
11  +5V------------------->  6 +5V
12  +5V------------------->  6 +5V
13  +12------------------->  7 +12V
14  DRIVE ENABLE----------> 17 Drv1 / 9 Drv2
15  +12V------------------>  7 +12V
16  READ DATA-------------> 18 READ DATA
17  +12V------------------>  8 +12V
18  WRITE DATA------------> 19 WRITE DATA
19  +12V------------------>  8 +12V
20  WRITE PROTECT---------> 10 WRITE PROTECT
                            16 NOT CONNECTED

Bill @ GarberStreet Enterprizez };-)
Web Site - http://garberstreet.netfirms.com
Email - willy4SPAM6pa@comXcast.net
Remove - SPAM and X to contact me



---
This email ain't infected, dude!

Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.593 / Virus Database: 376 - Release Date: 2/21/04