DIGITAL-LOGIC MICROSPACE MSEP800, Technical User'S Manual

Page: 54 / 140

DIGITAL-LOGIC AG
MSEP800 Manual V1.0G
54
I/O Addr. Function Size R/W Comment
48Fh DMA Channel 4 High Page 8-bit Rec
Upper addr bits [31:24]. Write LPC and DMA.
Read only DMA.
490h-4CFh No Specific Usage --- ---
4D0h PIC Level/Edge 8-bit Yes IRQ0-IRQ 7.
4D1h PIC Level/Edge 8-bit Yes IRQ8-IRQ15.
4D2h-4FFh No Specific Usage --- ---
Note 1. The Diverse Device snoops writes to this port and maintains the MSB as NMI enable. When low, NMI is enabled.
When high, NMI is disabled. This bit defaults high. Reads of this port return bits [6:0] from the on-chip or off-chip
target, while bit 7 is returned from the “maintained” value.