OS_ReadSysInfo 6

Most people shouldn’t need to worry about this, but I spotted that OS_ReadSysInfo 6 item numbers 18-23 had been reused for different purposes by Pace/Castle & ROL. Since ROL have already used item numbers up to 27, I’ve changed the way that we handle our item numbers so that the conflicting items 18-23 have been duplicated as item numbers 64-69, and I’ve used 70+ for all the new items I needed for the zero page relocation.

So any software that’s aimed at 5.17+ should use items 64-69 instead of 18-23, but software that needs to be compatible with 5.00+ (and doesn’t want to crash horribly on RO 4/6) will need to be careful when trying to use the old numbers.

https://www.riscosopen.org/wiki/documentation/show/OS_ReadSysInfo%206%20Items

I also realise I could have probably avoided duplicating a couple of the new ones and used ROL’s item numbers directly (IRQ stack, SWI dispatch), but thought it best to play it safe just in case the items have slightly different uses on ROL’s OS.