hi
check these points:
1.Reset(9) & PSEN(29) pins are LOW
2.EA/Vpp(31), p2.7(28) & ALE/PROG(30)
pins are HIGH(in my experience, better
not to make connections to P2.7)
3.crystal is working
4.no ripples in 5vdc
And in 232 ic:
1. cap. is connected to 6th pin as
indicated in my previous message
2. +10V at pin 2 and -10V at pin 6 of
232 level converter chip
and in flash magic:
1. make sure the com port selection is
correct.
2. baud rate=9600
3. x-tal freq. is exact value(eg.11.059200)
4. proper device selection
5. select blocks 0 and 1 for erasing
6. file path is correct
7. select the VERIFY option
8. "DON'T SELECT SECURITY BITS"
still it is not willing to work,check the BOOT VECTOR and STATUS BYTE of THE ic in a parallel programmer
if it is found to be FC and 00 resp.
then try this:
remove the ic from socket,short the Rx and Tx
pins in the (controller)ic base(or pins 11 and 12 of 232 ic).go to dos mode ,check that
ur com port is sending and receiving data
if port is healthy,then

CHECK UR CIRCUIT ONCE AGAIN

better luck
saji