Nicolas Pomarède schrieb:
On the DMA U36, FDINT and HDINT are indeed input signals and combel
outputs DSKIRQ (which becomes XDISKINT in other parts of the schematic).
DSKIRQ is a combination of these 2 input signals.
But I don't see where HDINT is coming from, I guess it's the ASCI's irq ?
After getting https://www.dev-docs.org/ up and running again -- more or
less :-( -- I could look it up in the schematic: HDINT comes from the
53C80 SCSI controller. (Search for "Atari Falcon030 Schematic (Rev G)"
on dev-docs; it's U7 on page 8.)