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H.A.R.P for MC68000 CPU accelerator board
H.A.R.P for mc68000 was manufactured and sold by Jast Inc from 1994 and is accelerator board for X68000. This is a replacement board for the X68000 Built-in CPU and it is intended to be plugged into the CPU socket to increase processing speed. It is compatible with first generation models (except those that have soldered in CPUs) up to SUPER.
There is a red dipswitch in the center of the photo labeled SW1 which must be set to 2 (OFF) for normal operation and 1 (ON) when used along with a Jast made memory expansion.
☆ ☆ ☆ Oh!X Information ☆ ☆ ☆
H.A.R.P will accelerate the CPU and double its internal clock speed 2x up to 20MHz. But the built-in factory default will remain at 10MHz because it is needed for arbitration. That is, it is working in full-20MHZ when CPU calculates and !!!!! when accessing the external bus is considerably 落Tosane do not have to 10MHz. Therefore, the actual rate of say what happens, “We have only about 10% faster!” Is that it is not.