Willem programmer software version 0.97ja

Selected device group MCS-51 > AT89C5x > …
Vcc=5.0V, Vpp=12.0V. Jumpers Jp1, Jp3 (5.0V), Jp5 (A18)
Verified chips AT89C51, AT89C52, AT89C55, Intel D87C51FC, AT89C51RC.

Chips AT89C51RC and AT89C55WD with activ lockbits can’t be erased, Vcc=6.2V required.
Software doesn’t support chip AT89C51RD.

Test results find in chip_test.xls file
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