11 Feb
2019
11 Feb
'19
10:08 a.m.
Yup; specifically, the symptoms are consistent with 'D15 RKBA=ALL 1 L' being
incorrectly generated at BA 167777, causing an increment to EX.MEM, causing a skip in the
DMA.
So it looks like problem with bit 12 in that carry logic; I'll check E28 and E34 when
I get back to it tonight, but I have to move the machine around so I can climb inside :-)
--FritzM.