A hardware clone of the classic Macintosh 128K, 512K, 512Ke, and Plus.
Watch this video on YouTube After a long hiatus, there’s new progress for the Plus Too FPGA-based Macintosh replica. Till Harbaum has ported my original, unfinished design to the MiST board, and has begun making fixes and improvements. The video…
Since the Plus Too project hasn’t seen any progress in a year, I’m posting all the design files in the hopes that someone else may want to build on what I’ve done. If you missed the earlier discussions about it,…
Last October, Plus Too first booted successfully into the Macintosh Finder. Ever since then, it’s exhibited an intermittent mouse freezing bug. The FPGA Mac replica runs normally for a few minutes, during which the mouse works normally, and it’s possible to exercise menus, run…
Mark McDougall (tcdev) discovered what looks like a serious bug in the way Plus Too handles interrupts. It appears my design causes the 68000 CPU to use the wrong interrupt handler vector! How it could work at all under those…
Plus Too is a home-made replica of a classic Macintosh computer using an FPGA. The project reached a major milestone yesterday, booting to the Finder for the first time, and running several programs. Since then I’ve been getting many inquiries,…
Plus Too works! Holy cow, it really works. Hot damn! I didn’t want to tackle SD card loading yet, so the GCR-pre-encoded 800K disk image resides in ROM, just above the Macintosh ROM image. The floppy drive module uses the…
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