Tag: 16mhz

Upgrades compact Macintosh computers with a 16 MHz 68030 and optional 68882 FPU through original vintage cards or modern recreations.

The open clone remains buildable, but MacEffects' assembled Macintosh SE variant was sold out on 2026-07-27. The original MicroMac page was last modified in 1998, so its order form and prices are archival rather than a current purchase path. Modern-clone operation has been tested in the Macintosh Plus and SE, but not in the Classic; no secure socket has been found for the Classic's PLCC CPU. Host-specific U7 and SJ2 settings are mandatory. GAL16V8-15 and PALCE16V8-15 parts are tested, while ATF16V8 and other speeds are not.

Combines an approximately 16 MHz 68030 and optional 68882 on a compact MicroMac Performer remix made for a Macintosh Plus clone.

Human review confirmed that the JCM Edition was in stock on 2026-07-24 and that JCM offers the CPU and FPU as a separate linked item. The open project and bare-PCB path remain available. Confirm the Edition's exact assembly state and mounting-clip contents before ordering. Installation requires access to the 68000, PLD choice is important, and some software may have distorted audio.

Adds a 16 MHz 68030 to a Macintosh Plus with a compact hobbyist-buildable board derived from the MicroMac Performer.

This build requires a PGA 68030, five programmed 16V8 devices, and soldering a socket on top of the Macintosh Plus 68000. The maker does not recommend the System 7.0 GemStart driver, reports garbled or intermittent audio, and warns builders to watch the first SIMM's clearance.

Recreates and modernizes the TransWarp GS accelerator for ROM 01 and ROM 03 Apple IIgs systems.

The current page described a presale and warned that IC shortages could delay delivery on 2026-07-24. ReActiveMicro reports ROM 01 and ROM 03 testing; it does not claim ROM 00 support. Faster oscillators increase stability and cooling demands.