Not the worst thing if your motivation is similar to mine. What I was trying to achieve with the physical boot switch is to have the machine "modernized" in one mode with the newer OS and other upgrades, and "how it was when I bought it from that nice old lady" in the other mode. They didn't have any on-accelerator RAM installed when they were using it, so it's pretty much back to what I was aiming for in this mode.terriblefire wrote: 11 Dec 2022 21:17 ...If you disable all the fastram then your machine is running at 7Mhz. So adding the 030 is pointless.
Just to experiment, I've tried manually enabling the RAM post-boot now that I'm using the updated TF536 firmware. There's some reproducible "strange behavior" which I still experience here (identical to when I was using my own tool for the SHUTUP). For example, if I start SysInfo and hold down the mouse button on the top-left scroll bar, the hard disk starts clicking as if it's reading or writing something. It will keep clicking until the mouse button is released. This is alarming to me, and seems to me like something going wrong with DMA, like the SCSI card is responding to the wrong memory address. I haven't been able to reproduce this when the RAM is disabled.
That said though, this Xetec SCSI card is a strange beast. It's quite an early card with very old firmware, and I have to disable caches even when running it on 3.2 to prevent disk corruption. The DMA just seems... problematic. So other people might not experience this issue, but I'm definitely keeping the RAM off in my case under 1.3.
