MPC1000 RAM and CF card Recommendations

Ah i thought it was the same RAM... should've read more carefully... Oh well it already comes with 128MB, more than i'll ever need for a project so that's cool... was only being greedy cos i had it lying around

So anyway, now there's one Samsung 256MB memory stick left if anyone wants it... full details a couple posts up!

PM me if you want it?

I just went to Radio Shack and found a 2G CF card for 20.00.

This is in San Francisco. Likely to be that way with alot of the States Radio Shacks I'm assuming.

Thought I'd let ya'll know.

http://www.multicom.no/PartDetail.aspx? ... 5;c:100422 this ok?

thanks for the usefull info mates!
/Set

hey, I have an old 128mb sdram card from my mac, will that work? It says on it

PC133U-333-542-C
128MB, SYNCH, 133MHz, CL3

THANKS alot!

I just got me a DANE-ELEC 4 GB Compact Flash card - works perfectly ! i think i wont get myself a hdd - most of the time i record my beats when they are done, so i think i wont reach the capacity limit

EDIT: I'm using JJ OS (the free version) - just in case. i think the OG MPC OS isnt able to handle more than 2 GB

http://cgi.ebay.com/128MB-MEMORY-RAM-AK ... m153.l1262


Will this one give me 128mb ram, or 64?

Peace

odzern wrote:http://cgi.ebay.com/128MB-MEMORY-RAM-AKAI-MPC1000-MPC2500-MPC500-EXM128_W0QQitemZ270224484496QQihZ017QQcategoryZ38070QQcmdZViewItemQQ_trksidZp1713.m153.l1262


Will this one give me 128mb ram, or 64?

Peace

i'm pretty sure you need 256 to have 128 in the mpc.



could someone tell me which of these to get?
http://www.shopbot.ca/default.asp?order ... ion=search

does the 16x8, 16x32 bit matter?

Penfold wrote:
I REPEAT FOR THOSE WHO ARE ILLITERATE
U NEED PC 133 144PIN CL3 SODIMM 256MB (ANY BRAND!)



You ask why 256MB?

The Ram is 64x4. meaning it has 4 banks of memory that are 64MB's Each
The MPC1000's hardware structure only can read one side of the ram chip or two banks if I'm not mistaken, (someone hear can confirm the right reason) anyway.. it will only read half of the Ram so there fore if you use 128 only 64MB will show up on your MPC1000. This is why we use 256MB so that 128MB shows up.
[/list]

this is why i'm wondering. it makes it sound like you need 64x___ for it to work

Hmm, will this one work?

KINGSTON 256MB 144PIN SODIMM SDRAM PC133 NON ECC CL3 IN

All those numbers and shit, i dont get it hehe..

Hello, how about this for a memcard?

http://cgi.ebay.com/Seagate-8GB-8G-GB-C ... 240%3A1318

It says type 2 and apparently the 500 can handle larger than 2gigs, just slower.

Hi all,
I'm new here, so I just wanted to say hi to everyone. I am a new owner of an MPC 1000. I was researching the memory upgrade, and I had some questions. Now please don't get mad, I have valid reasons for asking these questions, mostly because the answers that have been given have not been proven to me to be true. So anyhow,

1) The memory upgrade that is supplied by Akai, which uses the hy57v561620bt-h Hynix DRAM. Does it have DRAM chips on both sides? I only see two in any pictures that I have seen, because those pictures only show one side. Since this is a 128M SODIMM, and those chips are 16Mx16 DRAM, (which equates to 32MB per chip), it doesn't add up that it would only have two chips on it. It should have a total of 4, so I am asking for someone to confirm or deny this.

2) I know that everyone says that the MPC cannot read both sides of the SODIMM. But the only reason anyone has ever given that that is so is either conjecture, or an assumption based on the fact that when they put memory in it only sees half the memory. Does anyone have any valid arguments as to why the statement that 'It only reads one side' is true? Proof?

The reason I am digging so hard is because I have a theory. Is it possible the reason that every SODIMM that has been tried in the MPC has only produced half the size is due to the fact that that SODIMM was using a DRAM chip that was too high in density. This would produce the 'half the memory' effect.

For example, an 256MB SODIMM using a configuration of 16 chips of 16Mx8 (8 chips per side), such as the Kingston KTM-TP390X/256, or using 8 chips of 16Mx16 (4 chips per side) would, if my theory is correct, allow the MPC to read 256MB. Any 16 chip 256MB SODIMM should be low-density of 16Mb per DRAM.

If you stuck a normal, cheap, high-density SODIMM in there, which used 16 chips of 32Mx4 (8 chips per side), or 8 chips of 32Mx8 (4 chips per side), the density (32M) per chip would be higher than the MPC could handle, which I am assuming in my theory is 16Mb per chip. This would cause half the memory (or only 16Mb per chip) to be read, resulting in 128MB.

The other interesting angle is that if indeed the MPC can only read one side of the SODIMM, it may still be possible to use a low density DRAM configuration to procure more than 128MB on one SODIMM. It is possible to find a 16Mx16 based 512MB SODIMM, which would then be using 16 chips, 8 per side. This would be a workable 256MB within the confines of only 'one side', and would also remain low enough density to be read by a controller expecting a max of 16Mb DRAM density. Granted, such a SODIMM will likely not be very easy to find, but they exist. The rule of 16 chips I gave above for 256MB SODIMMs would not apply with 512MB, as both low and high density can be found with 16 chips.

Thoughts? Please disprove me so I don't waste my money

Alex

I picked up the PNY 256MB PC100/PC133 SODIMM 100/133MHz Memory and when i installed it the mpc, it keeps failing to load and i get a message that says:

MPC1000 Boot block ver: 1.03
Boot on SODIMM Memory Check Mode
Total Memory Size: 128MBytes
Check Memory
pass 1:Failed(8c000000)
The problem was found in memory
Please check the Memory
system halt...

I uninstalled and reinstalled the memory and i'm still getting the same message. Has anyone else incurred this, or any thoughs?

I got two 128 mb cf cards, one that came with the 500 and one that came with the 1000, then i have a 256mb Sandisk and a 2gig sandisk. I came up on the 256mb from an old busted a5s camera i had..and bought the 2gig from circuit city for 30 dollars.

Ok, so I think I might have figured out what's going on. Feel free to speak up if you can say for sure, but I think the Akai memory would have 4 chips, 2 on each side. The dram chips are 16MX16, which equates to @ 16000000 bits X 16 = 256000000. 256000000/8 = 32000000 = 32MB per chip. Now the fun part. Normally when talking about sodimms for a laptop the 128MB sodimm would have the chips in a 16Mx64 configuration (16Megabits depth X 64 bits width = 128MBytes). So the reason it would take 4 of these chips to make 128MB in that configuration would be due to the 64 bit width (64/16=4). Since the configuration depth of 16M is met by each chip at a 1:1 ratio, and the width would be at a 1:4 ratio, you would need 4 chips to total 128MBytes. So, the question of 'what is different about the MPC 1000' now comes in to play. All things so far show that 4 chips would be required using the Hynix dram that the Akai memory uses, so we will assume for the time being that it is double sided and has 4 chips. So the 'only reads one side thus half your ram' theory we are ignoring for now. I think the reason that people are getting the results they have gotten with 256MB sodimms is for a couple reasons. 1) They may be using sodimms with dram chips having too high of a density (above 16M per chip). 2) The MPC is only using a 32 bit memory width. This is the biggie. Almost all laptops, etc. use sodimms in a ?X64 configuration. Let's assume I am right about it only reading 32 bits. So now let's think about the Akai ram again. To achieve 128MB at 32 bit would mean a 32MX32 configuration instead of a 16Mx64. This means half the width and twice the depth would be required. So taking the same Hynix dram (16Mx16), we would be at a 1:2 depth ratio and a 1:2 width ratio. So basically, we still need 4 chips to reach 128MB, but for different reasons. The depth ratio has increased by 1 but the width ratio has decreased by 2. So the Akai ram having 4 chips, 2 on each side would still be ok in this theory. I still believe that the main reason people get half their total ram is because they are using too high of a density, greater than 16M. However, this changes the availability of ram a little.
To reach 256M using a 32 bit width would be a 64Mx32 configuration. We also cannot go above a 16M per chip density, so we have to find a sodimm with 8 chips of 16Mx16 density. This puts the ratio at 1:4 depth and 1:2 width. Which is how I concluded 8 chips. 4x2=8. There's other ways to look at that but basically if I am right I have to find a 256M sodimm with 8 chips that are 16Mx16 each. Not every ad for a sodimm is going to have this info, so unless you can see the model number on the dram chips themselves and look it up, it is a little harder to find. You don't want just any sodimm with 8 chips. The more common ones would have 8 chips of 32Mx8, which would be double the density we want, and would result in half the memory showing up. Not what we want. I have found a couple candidates within a few minutes of looking, and I will snatch one of these up soon. One of them is under $40. Not bad.