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M8190-AE (KDJ11-B) "Batteries not Included"

P

pbirkel@gmail.com

Veteran Member
Joined
Apr 7, 2013
Messages
1,190
Location
Silver Spring, MD, USA
Ref: https://www.ebay.com/itm/225598765550

Note that this is a full-fledged M8190-AE, the top-of-the-line processor implementation used in the PDP-11/83 and PDP-11/84 -- 18Mhz with the hard-to-find FPJ11-AA. Alas the J11 has been harvested, but those are in much greater supply than the FPJ11-AA that's included. Module is overpriced as-is, but seller accepts a Best Offer. Now's your opportunity ...
 
I have a stack of J11 cpus waiting for something to plug into, I didn't have spare FPUs
FYI, he accepted $200
 
czunit said:
Nice, but you really need PMI memory to make it go right.
Click to expand...
Ceteris paribus, the generation time of the RT on KDJ11-B (20 MHz)
Code: 
        SB        FB        XM        XB        ZM       ZB       SB-XB     SB-ZB
QBUS: 00:15:37  00:16:20  00:18:09  00:17:19  00:18:26  00:17:32  01:07:25  01:43:23
PMI:  00:12:37  00:13:11  00:14:38  00:13:58  00:14:57  00:14:12  00:54:24  01:23:33
 
RT11 still depends a lot on the disk speeds, PMI definitely speeds up M+ with disk cache (where builds become a mostly memory intensive operation).

One of these days I'll clock compiling Empire with 3mb of PMI vs 4mb of MSV11-QD memory with serious caching as a check.

Does the 11/73/83 run at 20mhz? I thought the limit was 18.
 
I think they wanted to run it at 20 but had issues so backed off to 18. For the 73 and 83.
 
And the Pro/380 which had to back down to 10mhz due to the motherboard design. Maybe one just needs heat sinks?
 
czunit said:
RT11 still depends a lot on the disk speeds
Click to expand...
CF as a disk and without caching
czunit said:
Does the 11/73/83 run at 20mhz? I thought the limit was 18.
Click to expand...
Now the board is running at 25 MHz
Code: 
Testing in progress - Please wait
Memory Size is 4088 K Bytes
9 Step memory test
Step 1 2 3 4 5 6 7 8 9


Message 04 Entering Dialog mode

Commands are Help, Boot, List, Setup, Map and Test.
Type a command then press the RETURN key: LIST

Device Unit
name numbers Source Device type

DU 0-255 CPU ROM RDnn, RXnn, RC25, RAnn
DL 0-3 CPU ROM RL01, RL02
DX 0-1 CPU ROM RX01
DY 0-1 CPU ROM RX02
DD 0-1 CPU ROM TU58
DK 0-7 CPU ROM RK05
MU 0-255 CPU ROM TK50, TU81
MS 0-3 CPU ROM TK25, TS05
ZA 0-64 CPU ROM CF 161000
ZB 0-64 CPU ROM CF 161040
ZC 0-64 CPU ROM CF 161100
ZD 0-64 CPU ROM CF 161140
ZE 0-64 CPU ROM CF 161200
ZF 0-64 CPU ROM CF 161240
WQ 0-64 CPU ROM CF 177120 primary

Press the RETURN key when ready to continue

Device Unit
name numbers Source Device type

WS 0-64 CPU ROM CF 177120 slave
XH 0-1 CPU ROM DECNET ETHERNET
NU 0-15 CPU ROM DECNET DUV11
NE 0-15 CPU ROM DECNET DLV11-E
NF 0-15 CPU ROM DECNET DLV11-F

Commands are Help, Boot, List, Setup, Map and Test.
Type a command then press the RETURN key: MAP


23.996 MHz
CPU Options: FPA

Memory Map
Starting Ending Size in CSR CSR Bus
Address address K Bytes address type type

00000000 - 17757776 4088 17772102 Parity PMI

Press the RETURN key when ready to continue

I/O page Map
Starting Ending
Address address

17761000 - 17761176
17765000 - 17765776 CPU ROM or EEPROM
17770200 - 17770376 Unibus Map
17772102 Memory CSR
17772150 - 17772152
17772200 - 17772276 Supervisor I and D PDR/PAR's
17772300 - 17772376 Kernel I and D PDR/PAR's
17772516 MMR3
17773000 - 17773776 CPU ROM
17776540 - 17776546
17777400 - 17777416
17777520 - 17777524 BCSR, PCR, BCR/BDR
17777546 Clock CSR
17777560 - 17777566 Console SLU
17777572 - 17777576 MMR0,1,2
17777600 - 17777676 User I and D PDR/PAR's
17777744 - 17777752 MSER, CCR, MREG, Hit/Miss

Press the RETURN key when ready to continue

I/O page Map
Starting Ending
Address address

17777766 CPU Error
17777772 PIRQ
17777776 PSW

Commands are Help, Boot, List, Setup, Map and Test.
Type a command then press the RETURN key: BOO ZB1


Trying ZB1

Starting system from ZB1


RT-11SB (S) V05.07

.R MSCPCK

.SHO CONF

RT-11SB (S) V05.07
Booted from ZB1:RT11SB

USR is set SWAP
EXIT is set SWAP
KMON is set NOIND
MODE is set NOSJ
TT is set NOQUIET
ERROR is set ERROR
SL is set OFF
EDIT is set KED
FORTRAN is set FORTRA
KMON nesting depth is 3
Global .SCCA flag is disabled

CLI is set DCL, CCL, UCL, NO UCF

PDP 11/83 Processor
4088KB of memory
Floating Point Accelerator Unit
Extended Instruction Set (EIS)
Memory Management Unit
Parity Memory
Cache Memory
PMI Memory
50 Hertz System Clock

Memory parity support
SB timer support
Global .SCCA support
FPU support
Extended unit support


.RUN HX7:SPEED4

Speed test (Performance test, with enabled, if found, cache)

...
R1(23456.)+R0(12345.) ... -> 5 988 999 ops/s
...
.
 
Last edited:
More about overclocking J11. As my experiments showed, -04 and -07 do not overclock. The -09 has a fifty-fifty chance of overclocking to 24 MHz, but if you look at a certain mark on J11, you can increase the chances (with the possibility of selecting J11) to almost 100 percent. But the amount of J11 I have does not make the sample statistically significant. Also, these experiments do not say anything about the dependence of the possibility of overclocking on the motherboard - all my KDF11-A and KDF11-B are overclocking.
 
pbirkel@gmail.com said:
What do you think of the DCJ11 Variations table
Click to expand...
I know this table well :) And now it reminded me that I also have -08 - it also does not overclock. -07 works well at a frequency of 20 MHz, but also - not higher. The collection has -04, -04A1, -07, -08 and -09. In addition to -09, I did not check all the other J11s for overclockability, but those that I tried did not overclock.
 
pbirkel@gmail.com said:
what is this "certain mark"
Click to expand...
On my -09s on DC334 there is an inscription in the H9627ZAAx format. If the last three symbols of AAD - chance of overclocking on 24 MHz are close to 100 percent , if AAC - is also very high. AAB is fifty-fifty. AAA did not come across. Without such an inscription, they overclock at a maximum of 20 MHz.
 
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