gvw1@ihuxp.UUCP (George V. Wilder) (05/25/84)
I just filled up the last slot in my Apple //e system. I think that I have detected a power supply problem where, in some cases, the standard //e power supply doesn't quite have enough capacity. I have a super serial card in slot 1, Micromodem //e in slot 2, 80 col--extended 64K card in slot 3 (Aux slot actually, cann't use slot 3), Apple Mouse in slot 4, Vista 8 inch controller card in slot 5, standard 5 1/4 controller in slot 6, and a PCPI Appli-Card in slot 7. I get a disk write error on the 5 1/4's when both drives are active (actually switching back and forth rapidly). I can work on the 8 inch drives "all night", or be reading from a 5 1/4 and writing to an 8 inch drive with no problems. I only have a problem when there is a program that uses both 5 1/4's (for example, [under CPM] using pip to copy one 5 1/4 to another). This problem just appeared after I added the Vista card. I suspect that the total power requirements for the system exceeds the capacity of the power supply when both 5 1/4's are very busy. I am going to do some more checking by removing some of the other cards first (I'll leave the Vista card in to make sure that it's not a software problem). QUESTION: Are there replacement power supplies that have a larger capacity than the standard power supply in the Apple //e. Thanks in advance for any assistance? George V. Wilder ihnp4!ihuxp!gvw1 1 (312) 979-1937 -- George V. Wilder ihnp4!ihuxp!gvw1