Sys-Check currently checks only the 64 KB base memory. I didn´t find the time to make new firmwares yet, but it´s on my personal roadmapTrollbra wrote: ↑Sat Dec 19, 2020 12:19 amThe game is Crownland : http://a8.fandal.cz/games.php?name=C&bu ... =&from=250
I check 64k and 128 bank with Sys-Check cartridge, it's ok !
I would bet several bucks that your 2nd bank is defective. Your photo shows good Toshiba DRAMs in the first bank, but proud-to-fail Micron DRAMs in the second bank. The second bank is used for the 64 KB expanded memory mirrored in four banks of each 16 KB. Crownload uses extended memory for graphics, so I´m 99,9% sure, that the extended memory is bad.
Micron DRAMs are bastards. Sometimes one defective chip influences the next, but itself shows it´s bits okay. Mostly, when you run one of the extended memory test tools, you will get different results with every run. There´s only ONE reliable way to solve: Remove all eight Micro DRAMs and install new ones. Otherwise you will re-open the machine after a few weeks to change the next Micron DRAM.
Or install one of the cheap and reliable 512 KB expansions, because a lot of games need more than 64 KB extended memory.