Hijack v388 is now available.

This version features a much more exhaustive memory test for expanded DRAM. It cycles several patterns through each location over the first 1MB of any installed "extra" DRAM.

This doesn't noticeably slow down player startup, but will very much aid in diagnosis of issues when testing a newly installed memory upgrade.

On upgraded players where all tests pass, no special messages are output -- you'll just see the player reporting more total system memory than before the upgrade.

On players without the upgrade, and players with a botched upgrade, one may notice a one-liner like this (below) near the top of the serial output at boot time:

Checking for extra DRAM at c1000000: wrote 00000000, read c00e78e0

A message like this (above) indicates either no extra DRAM found or test failed on the extra DRAM. In either case, the player startup continues WITHOUT the extra DRAM being used. The wrote and read values can be used to troubleshoot the memory upgrade if necessary (I suggest first simply resoldering the data lines which differ).

Cheers