Recent content by spirografo

Hi. I found this old post about plessey power supply. On my IIsi the little daugheterboard is dark brown and the temperature is very high. In standby mode 50C and more than 70 with IIsi powered on. The three resistors at the top are untouchable. I recapped all the capacitors except 2200mF...

thanks again for the support. The first group of bytes are contained starting from location 0xC6C The following 16 bytes from location 0003FFB0; is this the correct address?

you're great :) You are right. I probably wrote lowercase c instead of C and it was interpreted as zero Here are the correct data. I read 16 consecutive bytes

tell me if I did it right *L00000C70 *B0004 *M The stored value is 408060D0 The others are the contents of subsequent memory locations

From what you told me, the post ends correctly (otherwise I would have a black screen or sad mac). Error code 000F is a exception generated by the CPU. So there should be something broken on the bus or someone sending some bad data. Correct? via serial I gave the commands to test all 4 megabytes...

Hi. Yes, sorry. The code is missing a zero. *APPLE*00000001000F*1* According to the documentation the error is 000F. As you say, i could not find it anywhere. I am not able to understand at what point the iicx stops. The first step is scc and is obviously ok. Than Via chip and startup chime. So...

Does anyone know how to interpret the error *APPLE*0000001000F*1*? The IIcx provides it via serial. The machine is stuck at gray screen with no mouse pointer. With the original roms I have the good chime and immediately after the bad chime. with the rominator I only have the good chime but it...

Hi. I'm trying to repair a mac II cx. I have already replaced all the capacitors and checked some apparently damaged tracks. Now the Mac turns on first with the startup chime and immediately after with the crash chime. It's not a ram problem. The mouse arrow does not appear and everything...