MicroMac Technology MMXL99 SE-PL-CL Universal Accelerator Drivers?

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chrisangellis

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May 10, 2022
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I picked up a nice Classic Mac today from Facebook marketplace. It was in the original box with all the manuals, keyboard, mouse, disk, mouse pad, etc. As I started unbox it I found the manuals for a MicroMac MMXL99 accelerator. It made this find even more exciting. I removed the MicroMac board and placed it on a working Classic board that has been recapped. The board that was in the computer had very clear signs of leakage. I will recap that later. Everything works but I did want to make sure I had the latest drivers and was unable to find a downloadable copy. Does anyone know where to download the drivers? Maybe I should just call the phone number on the card? I did have a chance to test performance and it doubles the speed of a normal Classic. Not bad.

Update, I called the phone number on the board and its someone's person cell phone. Hope its an iPhone. 😉

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retr01

retr01

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chrisangellis said:
This board doesn't offer memory expansion. There is ram on the board and you can add some with the regular memory expansion board.
Click to expand...

Yeah. I noticed it does not have memory expansion, so I wanted to clarify where the RAM SIMMs are. Am I correct in deducing that those RAM SIMMs are under this board on the main logic board since I know the board is attached perpendicular to the expansion slot? :)
 
Nixontheknight

Nixontheknight

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Nov 3, 2021
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retr01 said:
Yeah. I noticed it does not have memory expansion, so I wanted to clarify where the RAM SIMMs are. Am I correct in deducing that those RAM SIMMs are under this board on the main logic board since I know the board is attached perpendicular to the expansion slot? :)
Click to expand...
No. On the Macintosh Classic, the only way of adding memory is with a card that either has memory slots or has memory built-in or both. I found a Kingston RAM card in my Macintosh Classic that had 1MB of RAM onboard and 2MB on SIMMs, adding up to 4MB total, including the 1MB onboard
 
retr01

retr01

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Nixontheknight said:
No. On the Macintosh Classic, the only way of adding memory is with a card that either has memory slots or has memory built-in or both. I found a Kingston RAM card in my Macintosh Classic that had 1MB of RAM onboard and 2MB on SIMMs, adding up to 4MB total, including the 1MB onboard
Click to expand...

Right. Separate from the accelerator card. I am asking, "is the accelerator card hiding the RAM SIMMs?" I do not see the RAM SIMMs anywhere when you have the accelerator installed on the Classic logic board. Wait, is the memory card not installed? What does it look like when installed on the logic board simultaneously with the accelerator?
 
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KennyPowers

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Jun 27, 2022
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retr01 said:
Right. Separate from the accelerator card. I am asking, "is the accelerator card hiding the RAM SIMMs?" I do not see the RAM SIMMs anywhere when you have the accelerator installed on the Classic logic board. Wait, is the memory card not installed? What does it look like when installed on the logic board simultaneously with the accelerator?
Click to expand...
There aren't any SIMM slots on the Classic's logic board. There is 1MB of RAM soldered onto the logic board. That large black connector on the left side of OP's picture is for an optional RAM expansion card that sticks up perpendicular to the logic board when installed (so it doesn't physically interfere with any of the common accelerators for the Classic). The RAM expansion card looks like this:

PXL_20220328_211744529.jpg
 
retr01

retr01

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KennyPowers said:
There aren't any SIMM slots on the Classic's logic board. There is 1MB of RAM soldered onto the logic board. That large black connector on the left side of OP's picture is for an optional RAM expansion card that sticks up perpendicular to the logic board when installed (so it doesn't physically interfere with any of the common accelerators for the Classic). The RAM expansion card looks like this:

View attachment 9138
Click to expand...

Ah! Now I understand. Thank you, @KennyPowers. :)

@chrisangellis, do you need the drivers? I will try to find them.
 
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retr01

retr01

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Macintosh Garden has those, too. For the Performer, it is the first link.

MicroMac Accelerator Software - Macintosh Garden

Drivers for various MicroMac accelerators (processor upgrades, caches, combos of both, ect.) Site seems fully functional; accelerators may still be purchasable even to this day. Note: drivers are released as freeware and readily downloadable from their site here.
macintoshgarden.org macintoshgarden.org
 
Trash80toG4

Trash80toG4

Active Tinkerer
Apr 1, 2022
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Very cool! Love to see your progress. My color coded AI modeling is prettier, but seeing it in real deal green is Earth shattering!

Now we only need a MagicalBus adapter running from the Classic socket thruholes to the Radius connector for one of my TPD cards in the Plus adapted, Drexel Branded 128K from whence it came. ;)

@Bolle have you enabled the 32MHz 68030 upgrade we've talked about? I spy a curious jumper there. U7 tweak or jumper to 16MHz takeoff from Plus/Classic boards? What lurks beneath?


edit: how hard would it be to do a Cache daughtercard on one "passthru" or the other? Do you nave a PerformerPro to play with for that or would your more generic module suffice?

edit: never mind, realized how ridiculous such would be in my excitement. That'd be a 16bit cache at 8MHz. :oops:
Has anyone ever done a socketed 68030 cache ONLY board?
 
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Trash80toG4

Trash80toG4

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Apr 1, 2022
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@Bolle wondering about JP1 again. Bodging a fourth header onto the left side might do the trick? That way the clock doubler GAL could be fed by jumper takeoff from 16MHz on the system board to support a 32MHz 68030?

edit: have you already got something like that implemented as is?
 
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