An 800XL I tested had a faulty memory chip, and the 130XE I tried had several faulty memory chips. That leaves the question:
Does Sys-Check check both memory banks, or just one (the first 64k)?
Thanks for feedback. Actually Sys-Check V1.3 only tests the main memory (64 KByte). In the future I will support also testing the extended memory.
To test to expanded memory in the 130 XE there´s an easy way: Just cross the both 33 Ohm resistors above the 16 pin "EMMU" (CO25953) IC. Crossing them exchanges main bank with extended bank. Sys-Check then also detects bad memory.