PowerBook 1400c RAM Identification

[AwkwardPotato]

Can't find any information online on these RAM cards and my 1400c doesn't have anything to boot off of for me to see how much RAM is installed. One card has 8x KM44C4100CS-6 IC's on it, while the other has 16x of the same type. The IC's are 4Mx4 bit, but I don't know the bus width of the cards, so I was wondering if anyone here was familiar with them and knows their size.

Here are a couple of pictures:





Thanks!

 

[AwkwardPotato]

Never mind -- the first module is 16mb and the second is 32mb, for a grand total of 48mb of RAM (not including the factory module).

 

[Trash80toHP_Mini]

I take it they stack and all you need is the 16MB factory module for a full loadout? Which do you have, or don't you have either one?

 

[AwkwardPotato]

Yep, these modules stack. There's also 8MB soldered to the board, so the memory is already maxed out.

 

[Trash80toHP_Mini]

OOPSIE! Forgot all about the RAM on the logic board. What I have handy is two sets, each with two 24MB cards stacked and a couple of 8MB factory cards. There's more in the 1400 stack, but IIRC I'm down to two 64MB MaxRAM sets aside from the 64MB I had in Beater all along.

_____________________________________________________________________________

Note
The 12 MB configuration has 8 MB of RAM on the main logic board and
an additional 4 MB on a factory-installed RAM expansion card. The
16 MB configuration has 8 MB on the factory-installed RAM expansion
card. That card is in addition to the user-accessible RAM expansion
cards. For more information, see “RAM Expansion Cards” beginning on
page 40.

______________________________________ from the 117MHz DevNote __________

Why don't you have a boot drive set up yet? There are all kinds of reasons for not being able to get there, what are you dealing with on that front? Do you have the 117, 133 or 166 version?

 

[AwkwardPotato]

I've got the 166MHz version. Just haven't gotten around to buying a new drive yet, but will probably go for a CF card & PCMCIA adapter when I get the chance.

 

[Trash80toHP_Mini]

Nice, that was my config before the G3/466/1MB upgrade.

I wonder if there is a quantifiable difference in performance between running the same CF Card off an IDE adapter in the HDD bay or in a PCMCIA adapter? That would boil down to throughput of the CF adapter interface to the TREX PCMCIA controller ASIC, with the PC Card address decodeing done by the Baboon IDE controller vs. having the IDE bus from the HDD bay connected directly to the Baboon IDE controller without the intermediary TREX ASIC.

Dunno, just thought of it. Less (overhead) is more (performance) the way I see things, but the difference could range form zero to insignificant. Interesting benchmarking to be done.