25 Jan
2012
25 Jan
'12
3:40 a.m.
Hi,
I have A M8186 (KDF11-A Rev D) and an M8047-CA (MXV11-AC) currently in
an H9275 Backplane.
I've fiddeled around an wondering why I can't access the ROMs on the M8047
at 173000. Finally found it, they get active ad 773000 in the ODT, since
the M8047 is using the BBS7 Signal from the CPU to decode the ROM Address.
My question is now regarding the Bootstrap setting, the Manual says that in
ODT mode the BDAL16 and BDAL17 are enabled to get access to the higher
memory contents. How is this handeled while bootstrapping? I can't set a
bootstrap address of 773000 on the KDF11, it boots now in ODT Mode and
displays 173000 after Reset, thati's the jumpered address.
How is this (BBS7) handeled while bootstrapping? Is the BBS7 low while
bootstrap at 173000 or is the M8047 incompatible with this processor?
(I've not tested to bootstrap since I don't know what is in the ROMs and I
don't have an RX02 nor TU58 to connect, want to put in a M7555 so I have to
change the ROMs for sure). As far as I know this KDF11 should be able to
handle 22 bits (420HD0 on the Handle, 5013326 D-P4 on the Board) is that
the case?
Next question about RAMs: I do have some QBUS Memory boards with PMI
connectors (M6708, NatSemi NS638, Chrislin CI-MV8 to be concrete) does
anyone know if I can use one of them with the KDF11 (or at least the
KDJ11?) I hve a KA630 too, but I need PDP11 RAM, the 16KW on the M8047
is really a bit small....
Next question is about an M7656 Graphic board that I have laying around
here. Where was this used and are there any docs available?
Regards,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741
25 Jan
25 Jan
6:23 a.m.
On 01/25/2012 06:40 AM, Holm Tiffe wrote:
Hi,
I have A M8186 (KDF11-A Rev D) and an M8047-CA (MXV11-AC) currently in
an H9275 Backplane.
I've fiddeled around an wondering why I can't access the ROMs on the M8047
at 173000. Finally found it, they get active ad 773000 in the ODT, since
the M8047 is using the BBS7 Signal from the CPU to decode the ROM Address.
My question is now regarding the Bootstrap setting, the Manual says that in
ODT mode the BDAL16 and BDAL17 are enabled to get access to the higher
memory contents. How is this handeled while bootstrapping? I can't set a
bootstrap address of 773000 on the KDF11, it boots now in ODT Mode and
displays 173000 after Reset, thati's the jumpered address.
How is this (BBS7) handeled while bootstrapping? Is the BBS7 low while
bootstrap at 173000 or is the M8047 incompatible with this processor?
(I've not tested to bootstrap since I don't know what is in the ROMs and I
don't have an RX02 nor TU58 to connect, want to put in a M7555 so I have to
change the ROMs for sure). As far as I know this KDF11 should be able to
handle 22 bits (420HD0 on the Handle, 5013326 D-P4 on the Board) is that
the case?
Most all KDf11s are Q22 make sure both of the hybrid chips are there the
second
one has the MMU for the 22 bit mapping!
Also make sure the backplane is Q22.
Lastly the M8047 make sure its jumpered correctly. If the boot in it
fails due to lack of device I think the report is 173003?.
ODT only knows 16bit octal. And BBS-7 is activated when the upper three
address bits are active for addresses greater than 160000 which is IO
and boot address space.
Next question about RAMs: I do have some QBUS Memory
boards with PMI
connectors (M6708, NatSemi NS638, Chrislin CI-MV8 to be concrete) does
anyone know if I can use one of them with the KDF11 (or at least the
KDJ11?) I hve a KA630 too, but I need PDP11 RAM, the 16KW on the M8047
is really a bit small....
PMI can be used with KDJ11 if its the right PMI. KA630 is not PDP11 but it
is microVAX. The memories at least the M7608 (you did mean 7608 and
not 6708?) is microVAX memory and incompatible with PDP11 cpus.
M7608-AA MS630-BA Q 2-Mbyte RAM for microVAX II (Q-22 via CD)
(Also M7608-AC, -AE, -AH, -AL, -AP, -AR, -AS, -AT,
-AU, -AV)
Next question is about an M7656 Graphic board that I
have laying around
here. Where was this used and are there any docs available?
It was used with the MicroVAX as part of the workstation configuration.
You will have to search though the MicroVAX manuals for more.
(check bitsavers).
Links to looks at:
http://www.pdp11.org/
Many links and good info.
http://www.strobedata.com/osprey/module.faq
This has the DEC module filed guide to translate module number to what
it is.
http://www.fpns.net/willy/pdp11/pdp11.htm
http://vaxarchive.pimpworks.org/hw/vfg/
Allison
Regards,
Holm
8:28 a.m.
allison wrote:
Yes, know this. But what's the right PMI for the KDJ11?
I have soldered an additional Megabyte to the KDJ11 and it has now 1,5MB,
which is enough tu run 2.11BSD, therefore I don't have tried to use one of
the memory Boards additionally until now.
On 01/25/2012 06:40 AM, Holm Tiffe wrote:
Yes, but I mean the difference between 773000 vs 173000.
I see the ROMs in ODT at 773000 but not at 173000!
Anyway, I'll jumpering the CPU to bootstrap and will look what happens.
Hi,
I have A M8186 (KDF11-A Rev D) and an M8047-CA (MXV11-AC) currently in
an H9275 Backplane.
I've fiddeled around an wondering why I can't access the ROMs on the M8047
at 173000. Finally found it, they get active ad 773000 in the ODT, since
the M8047 is using the BBS7 Signal from the CPU to decode the ROM Address.
My question is now regarding the Bootstrap setting, the Manual says that in
ODT mode the BDAL16 and BDAL17 are enabled to get access to the higher
memory contents. How is this handeled while bootstrapping? I can't set a
bootstrap address of 773000 on the KDF11, it boots now in ODT Mode and
displays 173000 after Reset, thati's the jumpered address.
How is this (BBS7) handeled while bootstrapping? Is the BBS7 low while
bootstrap at 173000 or is the M8047 incompatible with this processor?
(I've not tested to bootstrap since I don't know what is in the ROMs and I
don't have an RX02 nor TU58 to connect, want to put in a M7555 so I have to
change the ROMs for sure). As far as I know this KDF11 should be able to
handle 22 bits (420HD0 on the Handle, 5013326 D-P4 on the Board) is that
the case?
Most all KDf11s are Q22 make sure both of the hybrid chips are there the
second
one has the MMU for the 22 bit mapping!
Also make sure the backplane is Q22.
Lastly the M8047 make sure its jumpered correctly. If the boot in it
fails due to lack of device I think the report is 173003?.
ODT only knows 16bit octal. And BBS-7 is activated when the upper three
address bits are active for addresses greater than 160000 which is IO
and boot address space. Next question about RAMs: I do have some QBUS
Memory boards with PMI
connectors (M6708, NatSemi NS638, Chrislin CI-MV8 to be concrete) does
anyone know if I can use one of them with the KDF11 (or at least the
KDJ11?) I hve a KA630 too, but I need PDP11 RAM, the 16KW on the M8047
is really a bit small....
PMI can be used with KDJ11 if its the right PMI. KA630 is not PDP11 but it
is microVAX. The memories at least the M7608 (you did mean 7608
and
not 6708?) is microVAX memory and incompatible with PDP11 cpus.
Oh yes. This was a Typo, I meant M7608. I have two a 2MB and a 4MB Version.
M7608-AA MS630-BA Q 2-Mbyte RAM for microVAX II (Q-22 via CD)
(Also M7608-AC, -AE, -AH, -AL, -AP, -AR, -AS,
-AT,
-AU, -AV)
Thx, but I already knew them.
That's new to me, thx.
Next question is about an M7656 Graphic board that
I have laying around
here. Where was this used and are there any docs available?
It was used with the MicroVAX as part of the workstation configuration.
You will have to search though the MicroVAX manuals for more.
(check bitsavers).
Links to looks at:
http://www.pdp11.org/
Many links and good info.
http://www.strobedata.com/osprey/module.faq
This has the DEC module filed guide to translate module number to what
it is.
http://www.fpns.net/willy/pdp11/pdp11.htm
Allison
>Regards,
>
>Holm
Kind Regards,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741
9:15 a.m.
On Jan 25, 2012 8:31 AM, "Holm Tiffe" <holm at freibergnet.de> wrote:
Yes, know this. But what's the right PMI for the KDJ11?
I have soldered an additional Megabyte to the KDJ11 and it has now 1,5MB,
which is enough tu run 2.11BSD, therefore I don't have tried to use one of
the memory Boards additionally until now.
If it has on board memory that sounds like an M7554, which I don't think
does PMI memory. I think that is only the M8190 which would use M8637
MSV11-J for PMI memory.
-Glen
11:08 a.m.
Glen Slick wrote:
On Jan 25, 2012 8:31 AM, "Holm Tiffe"
<holm at freibergnet.de> wrote:
Yes it is an M7554, like the one of this guy:
http://home.windstream.net/engdahl/pdp-11_53.htm
It doesn't have the 50 PIN Ribbon Cable connector on the front like the VAX
RAMs, but I Think I've read somwhere that C and D Slots are building a PMI
BUS... ???
Regards,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741
Yes, know this. But what's the right PMI for the KDJ11?
I have soldered an additional Megabyte to the KDJ11 and it has now 1,5MB,
which is enough tu run 2.11BSD, therefore I don't have tried to use one of
the memory Boards additionally until now.
If it has on board memory that sounds like an M7554, which I don't think
does PMI memory. I think that is only the M8190 which would use M8637
MSV11-J for PMI memory.
-Glen 
11:43 a.m.
On Jan 25, 2012, at 2:08 PM, Holm Tiffe <holm at freibergnet.de> wrote:
Glen Slick wrote:
The PDP-11 PMI bus uses the C-D interconnect, but the MicroVAX-II and -III use a ribbon
cable across the tops of the boards. (and I think they use some lines on the C-D
interconnect too) These three PMI buses are completely different and are NOT compatible
in any way.
-Dave
--
Dave McGuire
New Kensington, PA
On Jan 25, 2012 8:31 AM, "Holm Tiffe"
<holm at freibergnet.de> wrote:
Yes it is an M7554, like the one of this guy:
http://home.windstream.net/engdahl/pdp-11_53.htm
It doesn't have the 50 PIN Ribbon Cable connector on the front like the VAX
RAMs, but I Think I've read somwhere that C and D Slots are building a PMI
BUS... ???
Yes, know this. But what's the right PMI for the KDJ11?
I have soldered an additional Megabyte to the KDJ11 and it has now 1,5MB,
which is enough tu run 2.11BSD, therefore I don't have tried to use one of
the memory Boards additionally until now.
If it has on board memory that sounds like an M7554, which I don't think
does PMI memory. I think that is only the M8190 which would use M8637
MSV11-J for PMI memory.
11:43 a.m.
On Wed, Jan 25, 2012 at 11:08 AM, Holm Tiffe <holm at freibergnet.de> wrote:
Yes it is an M7554, like the one of this guy:
http://home.windstream.net/engdahl/pdp-11_53.htm
It doesn't have the 50 PIN Ribbon Cable connector on the front like the VAX
RAMs, but I Think I've read somwhere that C and D Slots are building a PMI
BUS... ???
You can't use the VAX memory with the PDP-11
For reference:
EK-KDJ1B-UG-001
KDJ11-B CPU Module User's Guide
http://www.bitsavers.org/pdf/dec/pdp11/1173/EK-KDJ1B-UG_KDJ11-B_Nov86.pdf
1.6 PRIVATE MEMORY INTERCONNECT
The PMI is a unique Q22-Bus protocol that provides a high performance
data path between the KDJ11-B module and the MSV11-J memory modules.
These modules comprise the private memory and interface with the
KDJ11-B via a backplane structure that uses the Q22-Bus as the A/B
slots and an interconnecting interface as the C/D slots. This
backplane structure allows data and address information to be
multiplexed and transmitted via the Q22-Bus BDAL <21:0> data/address
lines, while the PMI protocol non-multiplexed control lines use the
C/D interconnecting interface. The PMI protocol functions in a Unibus
system by using the KTJ11-B Unibus adapter module designed to
interface with a PMI system. The PMI interface consists of 14 control
signals used on the C/D interface, 6 Q22-Bus control signals, the bank
7 select signal (BBS7) and the 22 data/address lines (BDAL <22:0>). A
complete description of the PMI operation is provided in Chapter 7.
EK-MSV1J-UG-001
MSV11-J MOS Memory User's Guide
http://www.bitsavers.org/pdf/dec/qbus/EK-MSV1J-UG_001_May85.pdf
10:52 a.m.
On 01/25/2012 11:28 AM, Holm Tiffe wrote:
allison wrote:
Yes, know this. But what's the right PMI for the KDJ11?
To
the best info I have all three board noted are for MicroVAX. I do
not know
the kDJ11B PMI memory needed. I have a KDJ11A and that uses Qbus memory.
Most of the systems have M8059 256Kbyte as I have many of them and a few
have larger 1mb boards.
On 01/25/2012 06:40 AM, Holm Tiffe wrote:
Yes, but I mean the difference between 773000 vs 173000.
I see the ROMs in ODT at 773000 but not at 173000!
Anyway, I'll jumpering the CPU to bootstrap and will look what happens.
Hi,
I have A M8186 (KDF11-A Rev D) and an M8047-CA (MXV11-AC) currently in
an H9275 Backplane.
I've fiddeled around an wondering why I can't access the ROMs on the M8047
at 173000. Finally found it, they get active ad 773000 in the ODT, since
the M8047 is using the BBS7 Signal from the CPU to decode the ROM Address.
My question is now regarding the Bootstrap setting, the Manual says that in
ODT mode the BDAL16 and BDAL17 are enabled to get access to the higher
memory contents. How is this handeled while bootstrapping? I can't set a
bootstrap address of 773000 on the KDF11, it boots now in ODT Mode and
displays 173000 after Reset, thati's the jumpered address.
How is this (BBS7) handeled while bootstrapping? Is the BBS7 low while
bootstrap at 173000 or is the M8047 incompatible with this processor?
(I've not tested to bootstrap since I don't know what is in the ROMs and I
don't have an RX02 nor TU58 to connect, want to put in a M7555 so I have to
change the ROMs for sure). As far as I know this KDF11 should be able to
handle 22 bits (420HD0 on the Handle, 5013326 D-P4 on the Board) is that
the case?
Most all KDf11s are Q22 make sure both of the hybrid chips are there
the
second
one has the MMU for the 22 bit mapping!
Also make sure the backplane is Q22.
Lastly the M8047 make sure its jumpered correctly. If the boot in it
fails due to lack of device I think the report is 173003?.
ODT only knows 16bit octal. And BBS-7 is activated when the upper three
address bits are active for addresses greater than 160000 which is IO
and boot address space. Next question about RAMs: I do have some QBUS
Memory boards with PMI
connectors (M6708, NatSemi NS638, Chrislin CI-MV8 to be concrete) does
anyone know if I can use one of them with the KDF11 (or at least the
KDJ11?) I hve a KA630 too, but I need PDP11 RAM, the 16KW on the M8047
is really a bit small....
PMI can be used with KDJ11 if its the right PMI. KA630 is not PDP11 but it
is microVAX. I have soldered an additional Megabyte to the KDJ11
and it has now 1,5MB,
which is enough tu run 2.11BSD, therefore I don't have tried to use one of
the memory Boards additionally until now.
Generally all the PDP11 OSs run in 512Kb or less. You have enough to be
useful.
Hope that helps. All of my Qbus systems (LSI-11 through J11) Use QBus
memory
as none of my CPUs require PMI.
I do have several Qbus MicroVAX-II and those do use PMI but different
part than PDP11.
The memories
at least the M7608 (you did mean 7608 and
not 6708?) is microVAX memory and incompatible with PDP11 cpus.
Oh yes. This was a
Typo, I meant M7608. I have two a 2MB and a 4MB Version.
M7608-AA MS630-BA Q 2-Mbyte RAM for
microVAX II (Q-22 via CD)
(Also M7608-AC, -AE, -AH, -AL, -AP, -AR, -AS,
-AT,
-AU, -AV)
Thx, but I already knew them.
That's new to me, thx.
Next question is about an M7656 Graphic board
that I have laying around
here. Where was this used and are there any docs available?
It was used with the MicroVAX as part of the workstation configuration.
You will have to search though the MicroVAX manuals for more.
(check bitsavers).
Links to looks at:
http://www.pdp11.org/
Many links and good info.
http://www.strobedata.com/osprey/module.faq
This has the DEC module filed guide to translate module number to what
it is.
http://www.fpns.net/willy/pdp11/pdp11.htm
Allison
> Regards,
>
> Holm
Kind Regards,
Holm
10:14 a.m.
On 25/01/2012 14:23, allison wrote:
On 01/25/2012 06:40 AM, Holm Tiffe wrote:
> Hi,
>
> I have A M8186 (KDF11-A Rev D) and an M8047-CA (MXV11-AC) currently in
> an H9275 Backplane.
> I've fiddeled around an wondering why I can't access the ROMs on the
> M8047
> at 173000. Finally found it, they get active ad 773000 in the ODT, since
> the M8047 is using the BBS7 Signal from the CPU to decode the ROM
> Address.
Most all KDf11s are Q22 make sure both of the hybrid
chips are there the
second
one has the MMU for the 22 bit mapping!
Specifically, all KDF11-B (the quad 11/23plus boards) and all KDF11-A
from Rev.C onward are Q22 -- providing, as Allison
said, they have the MMU.
Also make sure the backplane is Q22.
H9275 is, see http://www.dunnington.u-net.com/public/PDP-11/QBus_chassis
Lastly the M8047 make sure its jumpered correctly. If
the boot in it
fails due to lack of device I think the report is 173003?.
But note that although the I/O and bootstrap on an MXV11-A are
Q22-compatible, the memory is not. It has to be disabled if you need
22-bit functionality in the system. If you don't, you'll see the same
memory in 16 places, because it's only 18-bit and doesn't respect
BDAL18-BDAL21.
ODT only knows 16bit octal. And BBS-7 is activated
when the upper three
address bits are active for addresses greater than 160000 which is IO
and boot address space.
Not quiet, on a KDF11-A ODT is 18-bit. Under program control, the CPU
uses BBS7 to address the I/O page regardless of high-order address bits.
> Next question about RAMs: I do have some QBUS
Memory boards with PMI
> connectors (M6708, NatSemi NS638, Chrislin CI-MV8 to be concrete) does
> anyone know if I can use one of them with the KDF11 (or at least the
> KDJ11?) I hve a KA630 too, but I need PDP11 RAM, the 16KW on the M8047
> is really a bit small....
No KDF11 supports PMI. Only KDJ11-B does (not KDJ11-A nor KDJ11-D etc)
--
Pete
11:03 a.m.
Pete Turnbull wrote:
I know that is a "real" serpentine QBUS Backplane.
I have a H9278 too, currently the KDJ11 is in there. Maybe I should use it
for the KA630 VAX in conjunction with the memory Boards since it has 3 CD
private Slots.
Yes, I read this before. So at least it provides 2 SLUs..
Aha. So it is haindled differently under program control as in the ODT Mode.
That was my question.
Yes. I've asked primarly since I have those 3 CPU Boards, The VAX, The
KDJ11 (later version with onboard RAM) and the KDF11 with 2 Hybrids and
the MMU. (one socket free).
What about the RAM Boards and the KDJ11? I found no documentation for the
7608 ant nothing again for the other Boards (Crislin and NS).
Is one of them usable for the KDJ11 or is this VAX RAM different to the PMI
RAM for the KDJ11?
Kind Regards,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741
On 25/01/2012 14:23, allison wrote:
Yes it has an MMU.
On 01/25/2012 06:40 AM, Holm Tiffe wrote:
>Hi,
>
>I have A M8186 (KDF11-A Rev D) and an M8047-CA (MXV11-AC) currently in
>an H9275 Backplane.
>I've fiddeled around an wondering why I can't access the ROMs on the
>M8047
>at 173000. Finally found it, they get active ad 773000 in the ODT, since
>the M8047 is using the BBS7 Signal from the CPU to decode the ROM
>Address.
Most all KDf11s are Q22 make sure both of the
hybrid chips are there the
second
one has the MMU for the 22 bit mapping!
Specifically, all KDF11-B (the quad 11/23plus boards) and all KDF11-A
from Rev.C onward are Q22 -- providing, as Allison said, they have the MMU. Also make sure the backplane is Q22.
H9275 is, see http://www.dunnington.u-net.com/public/PDP-11/QBus_chassis Lastly the M8047 make sure its jumpered correctly.
If the boot in it
fails due to lack of device I think the report is 173003?.
But note that although the I/O and bootstrap on an MXV11-A are
Q22-compatible, the memory is not. It has to be disabled if you need
22-bit functionality in the system. If you don't, you'll see the same
memory in 16 places, because it's only 18-bit and doesn't respect
BDAL18-BDAL21. ODT only knows 16bit octal. And BBS-7 is activated
when the upper three
address bits are active for addresses greater than 160000 which is IO
and boot address space.
Not quiet, on a KDF11-A ODT is 18-bit. Under program control, the CPU
uses BBS7 to address the I/O page regardless of high-order address bits. >Next question about RAMs: I do have some QBUS
Memory boards with PMI
>connectors (M6708, NatSemi NS638, Chrislin CI-MV8 to be concrete) does
>anyone know if I can use one of them with the KDF11 (or at least the
>KDJ11?) I hve a KA630 too, but I need PDP11 RAM, the 16KW on the M8047
>is really a bit small....
No KDF11 supports PMI. Only KDJ11-B does (not KDJ11-A nor KDJ11-D etc)
--
Pete 
11:49 a.m.
On Jan 25, 2012, at 2:03 PM, Holm Tiffe wrote:
Aha. So it is haindled differently under program control as in the ODT Mode.
That was my question.
Yes, it has to be; the PDP-11 is a 16-bit processor, so those extra two bits have to come
from the MMU. In my experience with my KDF11, 773000 is interpreted differently from
173000 by ODT. As far as the CPU's execution unit is concerned, though, they're
the same.
- Dave
ODT only knows 16bit octal. And BBS-7 is activated
when the upper three
address bits are active for addresses greater than 160000 which is IO
and boot address space.
Not quiet, on a KDF11-A ODT is 18-bit. Under program control, the CPU
uses BBS7 to address the I/O page regardless of high-order address bits.
1:43 p.m.
On 25/01/2012 19:03, Holm Tiffe wrote:
Aha. So it is haindled differently under program control as in the ODT Mode.
That was my question.
In a way, yes, but in a way, no. The CPU always asserts BBS7 when
addressing the topmost 8KB of memory space; it's just that the 16-bit
CPU has a 64KB logical memory space whereas the MMU-equipped device has
a larger logical space. And then to complicate matters, but only for
that F11 processor, ODT is hardwired to 18 bits (other 22-bit CPUs also
have 22-bit ODT).
I know that is a "real" serpentine QBUS
Backplane.
Yes, but the downside is that being serpentine means certain quad-wide
cards can't be used. Anything that uses CD as CD interconnect, or that
puts unusual connections on those connectors.
I have a H9278 too, currently the KDJ11 is in there.
Maybe I should use it
for the KA630 VAX in conjunction with the memory Boards since it has 3 CD
private Slots.
That backplane is meant for a BA23 box, the type used for small
microPDP-11 and microVAX systems. Which makes sense if you have an
M7554, which is the CPU for a microPDP-11/53 -- one of the smallest and
the slowest J11-based microPDP-11 systems ever made.
ODT only knows 16bit octal. And BBS-7 is activated
when the upper three
address bits are active for addresses greater than 160000 which is IO
and boot address space.
Not quiet, on a KDF11-A ODT is 18-bit. Under program control, the CPU
uses BBS7 to address the I/O page regardless of high-order address bits. Yes. I've asked primarly since I have those 3 CPU
Boards, The VAX, The
KDJ11 (later version with onboard RAM) and the KDF11 with 2 Hybrids and
the MMU. (one socket free).
What about the RAM Boards and the KDJ11? I found no documentation for the
7608 ant nothing again for the other Boards (Crislin and NS).
Is one of them usable for the KDJ11 or is this VAX RAM different to the PMI
RAM for the KDJ11?
As others have already explained, the microVAX memory is completely
incompatible with a PDP-11. The NS638 is definitely microVAX memory,
ditto M7608 (it's an MS630), but I don't know about the Crislin. If it
has the connector on the end for the ribbon cable to connect memory to a
microVAX CPU, it's microVAX memory; if it doesn't have that, it isn't :-)
It was quite unusual to have additional memory cards in a
microPDP-11/53, because it was designed to be a low-cost all-in-one
processor/SLU/memory/bootstrap/clock board.
--
Pete
10:17 a.m.
On 25/01/2012 14:23, allison wrote:
Links to looks at:
http://www.strobedata.com/osprey/module.faq
This has the DEC module filed guide to translate module number to what
it is.
That's an old version. There's a newer one on Megan's website:
world.std.com/~mbg/pdp11-field-guide.txt
--
Pete
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