We provide replacements for hard-to-find
Qbus controllers
Your PDP-11 or MicroVAX is a workhorse,
but what do you do when a controller fails and replacements are
no longer available? Digital/Compaq no longer offers spares for
some Qbus controllers. We may be able to help.
The Logical Company has
used leading-edge technology to re-design some of the old, familiar,
but obsolete DEC controllers for the Qbus. Our controllers offer
a fresh start -- a new controller with a new warranty and pin
and signal compatibility with your existing DEC controllers.
Note:
These products are no longer in standard production. Check our
factory for availability and detailed specifications. A minimum
purchase may be required.
Click below to view or print a
data sheet in Acrobat Reader 3.0 format. Download Acrobat
Reader. If you prefer we fax or mail our product literature,
e-mail us.
Parallel
I/O Controllers
Our parallel I/O controllers offer a choice of 16-bit
DMA or 64-bit non-DMA parallel I/O capability to match the performance
you expect.
|
Parallel I/O Controllers
|
|
If you are using DEC's
|
Digital Part No.
|
Description
|
Use our Model
|
Size
|
O/S Compatible
|
Diagnostic
Compatible |
|
DRV11-WA
|
M7651
|
16-bit
DMA parallel I/O |
DCQ-1100
Data Sheet
Price
|
Dual
|
X
|
X
|
|
DRV11-J
|
M8049
|
64-bit
non-DMA parallel I/O |
DCQ-1400
Data
Sheet
Price
|
Dual
|
X
|
X
|
|
DRQ3B
|
M7658
|
16-bit
DMA parallel I/O |
DCQ-1500
Data
Sheet
Price
|
Quad
|
X
|
X
|
IEEE
488 Controller
We offer a dual line IEEE 488 interface that is compatible with
DEC's IEQ11-AD.
|
IEEE 488 Controller
|
|
If you are using DEC's
|
Digital Part No.
|
Description
|
Use our Model
|
Size
|
O/S Compatible
|
Diagnostic
Compatible |
|
IEQ11
|
M8634
|
IEEE
488, IEC controller |
DCQ-3100
Data Sheet
Price
|
Quad
|
X
|
X
|
Interrupt
Controller
Our interrupt controller is just like DEC's with 16 programmable
lines and fixed or rotating interrupt priority.
|
Interrupt
Controller
|
|
If you are using DEC's
|
Digital Part No.
|
Description
|
Use our Model
|
Size
|
O/S Compatible
|
Diagnostic
Compatible |
|
DRV11-J
|
M8049
|
16-line
interrupt controller |
DCQ-1400
Data Sheet
Price
|
Dual
|
X
|
X
|
