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cmorley · 04 May 2020, 08:48

There could be a number of reasons why adding an expansion makes crashing worse.

If power is a bit flakey then increased load might make something marginal that little bit worse (P.S. have you checked the 5v rails at the RAM chips and RAM buffers?)

If a logic chip is on its way out then driving more load might make it worse.

More RAM moves code into slow RAM to save chip RAM. Whatever the flaky thing between the CPU and RAM is might be slightly worse with the RAM on the expansion.

Poor connection on the 68000 gives all sorts of problems from yellow screen to crashing Workbench. Intermittent too. This is why wiggling the CPU often fixes problems for a while - you slightly improve the contact (for a short time). Cleaning chips and cleaning/replacing sockets cures a lot of faults.

04 May 2020, 08:48	#15
cmorley Registered User Join Date: Jun 2018 Location: Oxford, UK Posts: 66	There could be a number of reasons why adding an expansion makes crashing worse. If power is a bit flakey then increased load might make something marginal that little bit worse (P.S. have you checked the 5v rails at the RAM chips and RAM buffers?) If a logic chip is on its way out then driving more load might make it worse. More RAM moves code into slow RAM to save chip RAM. Whatever the flaky thing between the CPU and RAM is might be slightly worse with the RAM on the expansion. Poor connection on the 68000 gives all sorts of problems from yellow screen to crashing Workbench. Intermittent too. This is why wiggling the CPU often fixes problems for a while - you slightly improve the contact (for a short time). Cleaning chips and cleaning/replacing sockets cures a lot of faults.