In message <[EMAIL PROTECTED]>, Rich Mellor <[EMAIL PROTECTED]> writes
Hi, Assuming that all 3 are completely identical ... that is no circuit / component differences. It could be that the IC socket on the one that is not responding needs a clean up, as different pins on the upgrade EPROM may be active than that previous with the original. Apart from this, I cannot think of anything else to try. >I have 3 x v5.1 MicroP disk interfaces which all work fine using the >original EPROM. However, two of them will work with the QFLP upgrade EPROM. >The last one steadfastly refuses to read a disk with the QFLP upgrade >EPROM inserted. > >Does anyone have any ideas why? >I have looked at the boards - the odd one had some additional wires >added - removing these made no difference. It still works fine with the >original ROM. > >Now there's a puzzle -- Malcolm Cadman _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
