This is a basically a PCB that replaces your Macintosh 128/512/Plus's existing ROMs with a 8 Mb one. What are the advantages of the upgrade?
- ability to boot OS from ROM and run apps and games -- just press "r" at startup,
- turns your 128k or 512k into enhanced models (128 ke, 512 ke) that support 800k disks and HD20,
- lets you to flash "the disk" inside OS with your content, no need for any hardware programmer
- customizable startup sound and happy Mac
No more single floppy hassle (OS before System 6 wont allow you to eject boot floppy in order to open another disk, with System 6 it's possible, but it's a real struggle, because the System makes you juggle between bootable and application floppies back and forth, regardless of memory size!)
I have one unit left used in Macintosh Plus at the moment. 128k/512k needs different pinout.
Price: 39.99 EUR plus shipping, I can offer free installation if you're willing to send me your motherboard.
View attachment 140959
- ability to boot OS from ROM and run apps and games -- just press "r" at startup,
- turns your 128k or 512k into enhanced models (128 ke, 512 ke) that support 800k disks and HD20,
- lets you to flash "the disk" inside OS with your content, no need for any hardware programmer
- customizable startup sound and happy Mac
No more single floppy hassle (OS before System 6 wont allow you to eject boot floppy in order to open another disk, with System 6 it's possible, but it's a real struggle, because the System makes you juggle between bootable and application floppies back and forth, regardless of memory size!)
I have one unit left used in Macintosh Plus at the moment. 128k/512k needs different pinout.
Price: 39.99 EUR plus shipping, I can offer free installation if you're willing to send me your motherboard.
View attachment 140959
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