MACSIMM - MAC SE/30 IIsi IIfx flash ROM SIMM

Name: MACSIMM - MAC SE/30 IIsi IIfx flash ROM SIMM
SKU: 17959
Price: 29.00 USD
Availability: InStock
Rating: 5.00 (3 reviews)

(3 Reviews)

Programmable Flash ROM SIMM for Mac SE/30, IIfx and IIsi

Designed by GGLABS in United States of America

MACSIMM - MAC SE/30 IIsi IIfx flash ROM SIMM 1

MACSIMM - MAC SE/30 IIsi IIfx flash ROM SIMM 2

MACSIMM - MAC SE/30 IIsi IIfx flash ROM SIMM 3

MACSIMM - MAC SE/30 IIsi IIfx flash ROM SIMM 4

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2019-08-30T16:11:41.172Z-macsimm-b00-back.jpg

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Programmable Flash ROM SIMM for Mac SE/30, IIfx and IIsi

Why did you make it?

The Mac SE/30 was the fastest of the classic compact black and white Macintosh computers. It featured a 16MHz 68030 with 68882 FPU and a 32-bit memory interface and supported, albeit not officially, up to 128MB of RAM. Unfortunately the SE/30 ROM contained some old code that used 24-bit addressing making it 32-bit dirty. Many classic computer enthusiasts make their SE/30 32-bit clean by installing a Mac IIsi ROM SIMM. These are nowadays quite rare and difficult to find. MACSIMM provides a flash based replacement for the original ROM SIMM.

What makes it special?

Makes the SE/30 32-bit clean. Allows ROM hacking. 1.5MB Bootable ROMDISK (2MB version only) Free flash service is available on request.

Note on the 0K option

The 0K option does not include any flash chips. The board can take most 5V PLCC-32 flash ROMs of at least 1Mbit (i.e. 29F010). For obvious reason flash service is not available when selecting the 0K option.

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Quantity	Price
1-2	$19.00
3-9	$16.00
10+	$12.00

Review Breakdown

Average Ratings

Product: (5.00)

Documentation: (5.00)

Shipping: (5.00)

Communication: (5.00)

Jeff | Oct. 29, 2022

Nice addition to SE/30

I'm using this on my SE/30 to skip the startup RAM test and use the full amount of RAM without MODE32. I haven't had a chance to flash the ROM to include a custom bootdisk, but I love how that's an option!

Kay | Sept. 12, 2021

It's great for 68K Macs

I have three of them, but the ROM is removable so it can be used by rom programmers, which is convenient.
Next, I will try to edit the ROM.

Gregory | Sept. 11, 2021

SE30 restoration project Phase 1

Just get the hardware running, and tricked out with a nice 32bit clean ROM upgrade!

Next is complete rebuilds of the power supply and analog electronics boards so this baby outlives me!