>I have to plead DEC-hardware ignorance. Did the 11/23 use a single-chip
>micro (the LSI-11, according to Allison)? If so, then please add
>"non-DEC" to my Q :-)
The 11/23, 11/23+ and 11/24 all used the same chip set. The actual
processor existed as two chips mounted on one carrier. This was
the DCF-11 (the 'Fonz') chip. The memory management unit was a
second chip and the floating point unit was a third chip (again,
actually two chips on one carrier). In addition, there was a
CIS (commerical instruction set) chip which was 6 chips on a single
carrier (I have a couple of 11/23+ boards with CIS).
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry_at_zk3.dec.com |
| Unix Support Engineering Group | (home): mbg_at_world.std.com |
| Digital Equipment Corporation | |
| 110 Spitbrook Rd. ZK03-2/T43 | URL:
http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
Received on Sun Jun 28 1998 - 16:33:41 BST