PMS 64K Non-Volatile Ram Module

want to request software or documentation that you can't find online? post in here!
Post Reply
User avatar
Pernod
Posts: 1697
Joined: Fri Jun 08, 2012 10:01 pm
Location: Croydon, UK
Contact:

PMS 64K Non-Volatile Ram Module

Post by Pernod » Sat Nov 09, 2019 10:22 pm

Anyone have the PMS 64K Non-Volatile Ram Module?

Here's an advert:
PMS 64K NV-RAM.jpg
I'm specifically looking for the manual and the software that came with it.

The hardware is probably very simple, 64K battery backed RAM, accessible via the paging register at &FCFF and read via JIM.

There's one at CfCH, http://www.computinghistory.org.uk/det/ ... AM-Module/
product-110477.jpg
This kind of suggests it may have come pre-loaded with software, select page 0 and call whatever is there. What's the chances of this still being present?

Worth taking a look at during a future CfCH meeting. Should be easy enough to page in each block and write to floppy.
- Nigel

BBC Model B: ATPL Sidewise, Acorn Speech, 2xWatford Floppy Drives, AMX Mouse, Viglen case, BeebZIF, etc.

User avatar
jms2
Posts: 2302
Joined: Mon Jan 08, 2007 6:38 am
Location: Derby, UK
Contact:

Re: PMS 64K Non-Volatile Ram Module

Post by jms2 » Sat Nov 09, 2019 10:58 pm

There is one currently for sale on Ebay actually.

User avatar
Pernod
Posts: 1697
Joined: Fri Jun 08, 2012 10:01 pm
Location: Croydon, UK
Contact:

Re: PMS 64K Non-Volatile Ram Module

Post by Pernod » Sat Nov 09, 2019 11:02 pm

jms2 wrote:
Sat Nov 09, 2019 10:58 pm
There is one currently for sale on Ebay actually.
Bit pricey, especially untested and doesn't mention either the software or manual.
- Nigel

BBC Model B: ATPL Sidewise, Acorn Speech, 2xWatford Floppy Drives, AMX Mouse, Viglen case, BeebZIF, etc.

User avatar
jms2
Posts: 2302
Joined: Mon Jan 08, 2007 6:38 am
Location: Derby, UK
Contact:

Re: PMS 64K Non-Volatile Ram Module

Post by jms2 » Sat Nov 09, 2019 11:28 pm

Quite. I assume the price is based on rarity (and optimism!)

User avatar
Pernod
Posts: 1697
Joined: Fri Jun 08, 2012 10:01 pm
Location: Croydon, UK
Contact:

Re: PMS 64K Non-Volatile Ram Module

Post by Pernod » Tue Nov 12, 2019 11:39 am

Another interesting advert from PMS, from Acorn User Apr.86:
PMS-Z-NVRAM.png
It mentions a PMS Z-range, which are different from the 64K NVRAM module, and come in a range of sizes from 64K upto 512K. There's no mention of software with these devices and also can't find any reviews.

The attached ROM seems to be intended for these, it's definitely by PMS, and reports RAM capacity as one of 64K, 128K, 192K, 256K, 320K, 384K, 448K, 512K. It also references 'No module(s) connected' suggesting multiple modules can be connected.
0144.png
These RAM disks were also advertised in later months, Aug/Sept, but no mention of pricing and still no mention of the RAM operating system in ROM.

Anyone know anything about them, did they ever exist?
Attachments
AdvancedROS-PMS-1.0.rom
(16 KiB) Not downloaded yet
- Nigel

BBC Model B: ATPL Sidewise, Acorn Speech, 2xWatford Floppy Drives, AMX Mouse, Viglen case, BeebZIF, etc.

User avatar
jms2
Posts: 2302
Joined: Mon Jan 08, 2007 6:38 am
Location: Derby, UK
Contact:

Re: PMS 64K Non-Volatile Ram Module

Post by jms2 » Tue Nov 12, 2019 4:39 pm

That sticker on the 64k ram module says "*ROSON", which suggests to me that the Advanced Ram Operating System was intended for the 64k module. However it would make sense if it also worked with the Z-modules as well (given that they were bigger, and match the bigger sizes listed in the rom).

It's interesting that the Z-modules are stated as being for the Z80 second processor. Surely they would also work with a normal BBC as well?

User avatar
Pernod
Posts: 1697
Joined: Fri Jun 08, 2012 10:01 pm
Location: Croydon, UK
Contact:

Re: PMS 64K Non-Volatile Ram Module

Post by Pernod » Tue Nov 12, 2019 4:55 pm

jms2 wrote:
Tue Nov 12, 2019 4:39 pm
That sticker on the 64k ram module says "*ROSON", which suggests to me that the Advanced Ram Operating System was intended for the 64k module.
The ROM implements *ROS, not *ROSON.
jms2 wrote:
Tue Nov 12, 2019 4:39 pm
However it would make sense if it also worked with the Z-modules as well (given that they were bigger, and match the bigger sizes listed in the rom).
The 64K module only implements a single page register at &FCFF, whereas the Z-modules require two registers &FCFE/FF. The ROM detects my 64K module emulation as 512K as it can't differentiate between pages &00FF and &07FF.
- Nigel

BBC Model B: ATPL Sidewise, Acorn Speech, 2xWatford Floppy Drives, AMX Mouse, Viglen case, BeebZIF, etc.

User avatar
KenLowe
Posts: 741
Joined: Mon Oct 18, 2004 4:35 pm
Location: Scotland
Contact:

Re: PMS 64K Non-Volatile Ram Module

Post by KenLowe » Tue Nov 12, 2019 5:04 pm

Pernod wrote:
Tue Nov 12, 2019 11:39 am
and also can't find any reviews.
I don't know anything about the unit, but from Micro User, Jan 1986:
PMS Review - Page 1.JPG
Page 1
PMS Review - Page 2.JPG
Page 2

User avatar
Pernod
Posts: 1697
Joined: Fri Jun 08, 2012 10:01 pm
Location: Croydon, UK
Contact:

Re: PMS 64K Non-Volatile Ram Module

Post by Pernod » Tue Nov 12, 2019 5:13 pm

KenLowe wrote:
Tue Nov 12, 2019 5:04 pm
I don't know anything about the unit, but from Micro User, Jan 1986:
Yep, had already seen that, it's the Z-modules that I haven't seen reviews of. This review of the 64K module also states that the ROS is installed on the module, and no mention of a ROM.
- Nigel

BBC Model B: ATPL Sidewise, Acorn Speech, 2xWatford Floppy Drives, AMX Mouse, Viglen case, BeebZIF, etc.

User avatar
KenLowe
Posts: 741
Joined: Mon Oct 18, 2004 4:35 pm
Location: Scotland
Contact:

Re: PMS 64K Non-Volatile Ram Module

Post by KenLowe » Tue Nov 12, 2019 5:53 pm

Pernod wrote:
Tue Nov 12, 2019 5:13 pm
KenLowe wrote:
Tue Nov 12, 2019 5:04 pm
I don't know anything about the unit, but from Micro User, Jan 1986:
Yep, had already seen that, it's the Z-modules that I haven't seen reviews of. This review of the 64K module also states that the ROS is installed on the module, and no mention of a ROM.
Sorry. Misinterpreted your post.

Post Reply