MaxTransfer , how and where.

[Trev]

And based on past observations, I'm under the impression this is a signed value, so 0x7fffffff would be the max, anyway. Anyone know for sure? Dependent on the device driver's interpretation of the data?

[Trev]

@Zac67

:-P My point, of course, was that 0x80000000 = -1 and any device that can transfer negative blocks of data certainly deserves our attention. ;-)

WinUAE supports up to 1.5GB, so it's almost there. I forget why Toni stopped there, but I think he's explained over on EAB. So, an OS3 device driver could, in theory, use a MaxTransfer value approaching 2^31-1 if Toni bumped up the Z3 memory emulation. :-)

And there's OS4 and MorphOS to consider. Did device driver tooltypes carry over to those with the same semantics?

[Trev]

Uh, d'oh! Yes. :-) The point of my point ;-) was the sign bit, so I could fib and say I meant -1 * n or something like that. Pardon me while I bludgeon myself with a two's complement primer.