Fitting more RAM than required to expansion?

Fingerlickin_B · 07 June 2007, 13:12

Hi folks,

I just got a DKB 1202 expansion card for my A1200.

It only goes up to 8mb, but I've had to fit more than that (the reasons are complicated).

Will there be any issues with using "too much" RAM for the card?

Everything looked fine when I booted up Classic WB, but I'm not sure if there will be any ill effects when I play games, etc

PZ.

Peter · 07 June 2007, 13:23

I thought that all bog standard expansion cards could only support up to 8 Meg - I didn't think cards of this type would recognize any additional ram over what they support. Maybe the DKB does support more than 8 meg - do you have any documentation with the board?

fc.studio · 07 June 2007, 13:28

I'm not expert, but what I know it's that with 68020 processor A1200 can't address fast memory over 8Mb and simply it can't use it.

killergorilla · 07 June 2007, 13:28

I think he already knows he can't use more than 8mb, but he only has larger SIMMS available. If he puts a 32mb in, he'll only access 8mb but will it cause any problems?

I've personally never tried it though.

Fingerlickin_B · 07 June 2007, 13:30

Quote:

Originally Posted by Peter

I thought that all bog standard expansion cards could only support up to 8 Meg - I didn't think cards of this type would recognize any additional ram over what they support. Maybe the DKB does support more than 8 meg - do you have any documentation with the board?

Nah, I didn't get anything with it (except for a receipt

).

It's either got 12 or 24mb on board right now...this is why I thought problems may arise.

PZ.

fc.studio · 07 June 2007, 13:32

Quote:

Originally Posted by killergorilla

I've personally never tried it though.

Me too, however I'm curious to know what A1200 shows as available fast/other memory in the Workbench screen.

Fingerlickin_B · 07 June 2007, 13:32

Quote:

Originally Posted by killergorilla

I think he already knows he can't use more than 8mb, but he only has larger SIMMS available. If he puts a 32mb in, he'll only access 8mb but will it cause any problems?

Exactly man, thanks for clearing it up

One of the cards has RAM on both sides...DIMMS?

PZ.

killergorilla · 07 June 2007, 13:41

One of my older cards used to have 2 SIMM slots, I presume with your card it's for 2 x 4MB SIMMS (as 8MB may have been too pricy!)

killergorilla · 07 June 2007, 13:45

Quote:

Originally Posted by fc.studio

Me too, however I'm curious to know what A1200 shows as available fast/other memory in the Workbench screen.

It'd show 8MB

His question wasn't how much RAM he could use, it was the question of whether he could still use larger SIMMS (upwards of 8MB) and have them work with no further problems.

Fingerlickin_B · 07 June 2007, 13:47

Quote:

Originally Posted by fc.studio

I'm curious to know what A1200 shows as available fast/other memory in the Workbench screen.

Looks closer to 10mb...cool!

Without the RAM fitted it shows somwhere in the range of 1,500,000 to 1,600,000 graphics mem, so the extra RAM must substitute the memory used up by Workbench running.

PZ.

killergorilla · 07 June 2007, 14:03

Yep, that's your 2MB chip and your 8MB fast alright

You'll always free up chipram the second you install any fast ram (no matter how little), that's why it's so good to get some installed

fc.studio · 07 June 2007, 14:08

You are near to 8MB probably 'cause you're using a 12MB SIMM or 16MB SIMM and that screen-shot was taken from a Micro$oft OS.

Fingerlickin_B · 07 June 2007, 14:10

Quote:

Originally Posted by fc.studio

that screen-shot was taken from a Micro$oft OS.

Huh?

Peter · 07 June 2007, 14:16

It would be worth checking out the big book of Amiga hardware http://www.amiga-hardware.com/ as the memory on this card can conflict with the PCMCIA slot - it has jumper settings to take into consideration.

fc.studio · 07 June 2007, 14:22

I was joking.

But in my opinion Amiga OS=needs little memory to go better
Windows needs much memory in order not to go worse.

Fingerlickin_B · 07 June 2007, 14:22

Thanks for the heads-up Peter.

Yep, the big book says if using more than 5.5mb the PCMCIA slot becomes unusable.

Not really a concern as I probably won't need the PCMCIA in future anyway.

Still good to know in the event that I want to use it...will wire the enable/disable jumper pins to a switch at rear of the case just to be sure

PZ.

Fingerlickin_B · 07 June 2007, 14:23

Quote:

Originally Posted by fc.studio

I was joking.

But in my opinion Amiga OS=needs little memory to go better
Windows needs much memory in order not to go worse.

Ah, yeah Windoze is a memory junkie!!!!

PZ.

fc.studio · 07 June 2007, 14:39

Quote:

Originally Posted by Fingerlickin_B

Not really a concern as I probably won't need the PCMCIA in future anyway.

At very little price you can use an adapter and a compact flash
(drivers are free available on Aminet).
Since I installed this I didn't use anymore my Amiga CD-RW because to copy file from/to PC (and this has high speed internet) is easier and faster.

Try to believe.

Fingerlickin_B · 07 June 2007, 14:42

I had considered that...hence the enable/disable switch...just in case I want to

PZ.

alexh · 07 June 2007, 16:54

If memory serves me correct, the 1202 can have 5.5Mbytes of FastRAM and not affect the PCMCIA but it needs the software installing.

1.5Mbytes is not really worth it is it? Surely use the hardware jumper for 4Mbyte only!

07 June 2007, 13:12	#1
Fingerlickin_B Amiga Nut Join Date: Oct 2006 Location: Belco, Australia Posts: 2,116	Fitting more RAM than required to expansion? Hi folks, I just got a DKB 1202 expansion card for my A1200. It only goes up to 8mb, but I've had to fit more than that (the reasons are complicated). Will there be any issues with using "too much" RAM for the card? Everything looked fine when I booted up Classic WB, but I'm not sure if there will be any ill effects when I play games, etc PZ.

07 June 2007, 13:23	#2
Peter Unemployed & Lovin' it Join Date: Nov 2006 Location: Garden of England Age: 44 Posts: 2,498	I thought that all bog standard expansion cards could only support up to 8 Meg - I didn't think cards of this type would recognize any additional ram over what they support. Maybe the DKB does support more than 8 meg - do you have any documentation with the board? __________________ Help me find the Amiga game called "Scavenge"

07 June 2007, 13:28	#4
killergorilla Lesser Talent Join Date: Jan 2003 Location: UK Age: 31 Posts: 7,895	I think he already knows he can't use more than 8mb, but he only has larger SIMMS available. If he puts a 32mb in, he'll only access 8mb but will it cause any problems? I've personally never tried it though. __________________ I'm totally gratified that people find Interceptor worthy of being downloaded and played after so many years especially in light of its rather rudimentary visual content by standards constantly increasing over time.

07 June 2007, 13:41	#8
killergorilla Lesser Talent Join Date: Jan 2003 Location: UK Age: 31 Posts: 7,895	One of my older cards used to have 2 SIMM slots, I presume with your card it's for 2 x 4MB SIMMS (as 8MB may have been too pricy!) __________________ I'm totally gratified that people find Interceptor worthy of being downloaded and played after so many years especially in light of its rather rudimentary visual content by standards constantly increasing over time.

07 June 2007, 14:03	#11
killergorilla Lesser Talent Join Date: Jan 2003 Location: UK Age: 31 Posts: 7,895	Yep, that's your 2MB chip and your 8MB fast alright You'll always free up chipram the second you install any fast ram (no matter how little), that's why it's so good to get some installed __________________ I'm totally gratified that people find Interceptor worthy of being downloaded and played after so many years especially in light of its rather rudimentary visual content by standards constantly increasing over time.

07 June 2007, 13:28	#3
fc.studio Cat lover Join Date: May 2004 Location: Italy Age: 43 Posts: 799	I'm not expert, but what I know it's that with 68020 processor A1200 can't address fast memory over 8Mb and simply it can't use it.

07 June 2007, 14:08	#12
fc.studio Cat lover Join Date: May 2004 Location: Italy Age: 43 Posts: 799	You are near to 8MB probably 'cause you're using a 12MB SIMM or 16MB SIMM and that screen-shot was taken from a Micro$oft OS.

07 June 2007, 14:16	#14
Peter Unemployed & Lovin' it Join Date: Nov 2006 Location: Garden of England Age: 44 Posts: 2,498	It would be worth checking out the big book of Amiga hardware http://www.amiga-hardware.com/ as the memory on this card can conflict with the PCMCIA slot - it has jumper settings to take into consideration. __________________ Help me find the Amiga game called "Scavenge"

07 June 2007, 14:22	#15
fc.studio Cat lover Join Date: May 2004 Location: Italy Age: 43 Posts: 799	I was joking. But in my opinion Amiga OS=needs little memory to go better Windows needs much memory in order not to go worse.

07 June 2007, 14:42	#19
Fingerlickin_B Amiga Nut Join Date: Oct 2006 Location: Belco, Australia Posts: 2,116	I had considered that...hence the enable/disable switch...just in case I want to PZ.

07 June 2007, 16:54	#20
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 10,551	If memory serves me correct, the 1202 can have 5.5Mbytes of FastRAM and not affect the PCMCIA but it needs the software installing. 1.5Mbytes is not really worth it is it? Surely use the hardware jumper for 4Mbyte only! __________________ Thalion Webshrine

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