Hi,
thanks for that.
This is my wiring for the AT89C2051:
AT89 -> ISP : Description
1 -> 10 : RST
10 -> GND : GND
11 -> VCC : VCC
12 -> 13 : SCK
13 -> 12 : MISO
14 -> 11 : MOSI
4 & 5 are bridged with a 16Mhz Crystal, and each lead has a 22pF cap between it and to ground (i.e. 2 caps)
I have also tried a 12Mhz Crystal.
I've tested all connection with a multimeter and they are all making contact.
J