Can I disable Nedopc A600 8MB fastram ?

Dougal · 12 January 2014, 22:47

The problem is that as it is (8MB) the PCMCIA slot does not work unless I remove the ram expansion which is not practical at all.

I was wondering if there is a way I can disable it through software for whenever I need to use the PCMCIA slot.

Specs: A600 HD with Kickstart 3.1, 2MB Chipram (through trapdoor expansion) and Nedopc 8MB 2007 model expansion which does not have jumper config.

alexh · 12 January 2014, 23:15

nope. no software controls

cpiac64 · 12 January 2014, 23:55

you need add a switch on jumper if remember right

sorry model 2007 need mod

fitzsteve · 13 January 2014, 00:01

It depends on the revision, the latest I believe has jumpers for 4mb/5.5mb and 8mb like Kipper expansion. (5.5mb is still PCMCIA friendly)

If it's the older one (2007 IIRC) you are stuck at 8mb unless you remove it totally.

Dougal · 13 January 2014, 00:03

Yes its the 2007 model. No Jumpers.

I heard that the CPLD can be reprogrammed to 4MB. I have no idea how to do that nor do i have a programmer or the firmware.

Is it possible that it can be reprogrammed to only address 4MB and if so who would be able to do this for me ? I don't need 8MB.

cpiac64 · 13 January 2014, 09:08

i suppose you can modify it
i need verify the schematics

cut nras1 and nras2 but i not sure

12 January 2014, 22:47	#1
Dougal Registered User Join Date: Jan 2010 Location: Malta Posts: 84	Can I disable Nedopc A600 8MB fastram ? The problem is that as it is (8MB) the PCMCIA slot does not work unless I remove the ram expansion which is not practical at all. I was wondering if there is a way I can disable it through software for whenever I need to use the PCMCIA slot. Specs: A600 HD with Kickstart 3.1, 2MB Chipram (through trapdoor expansion) and Nedopc 8MB 2007 model expansion which does not have jumper config.

12 January 2014, 23:55	#3
cpiac64 Registered User Join Date: Apr 2010 Location: Italy Posts: 1,136	you need add a switch on jumper if remember right sorry model 2007 need mod Last edited by cpiac64; 13 January 2014 at 00:01.

13 January 2014, 09:08	#6
cpiac64 Registered User Join Date: Apr 2010 Location: Italy Posts: 1,136	i suppose you can modify it i need verify the schematics cut nras1 and nras2 but i not sure Last edited by cpiac64; 13 January 2014 at 09:49.

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12 January 2014, 23:15	#2
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,331	nope. no software controls

13 January 2014, 00:01	#4
fitzsteve Professional slacker! Join Date: Jul 2009 Location: Kent, UK Age: 44 Posts: 6,683	It depends on the revision, the latest I believe has jumpers for 4mb/5.5mb and 8mb like Kipper expansion. (5.5mb is still PCMCIA friendly) If it's the older one (2007 IIRC) you are stuck at 8mb unless you remove it totally.

13 January 2014, 00:03	#5
Dougal Registered User Join Date: Jan 2010 Location: Malta Posts: 84	Yes its the 2007 model. No Jumpers. I heard that the CPLD can be reprogrammed to 4MB. I have no idea how to do that nor do i have a programmer or the firmware. Is it possible that it can be reprogrammed to only address 4MB and if so who would be able to do this for me ? I don't need 8MB.

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