Intel 386

D-19
SYSTEM REGISTER QUICK REFERENCE
D.14 DMAIEN
DMA Interrupt Enable
DMAIEN
(read/write)
Expanded Addr:
ISA Addr:
Reset State:
F01CH
—
00H
7 0
———— ——TC1TC0
Bit
Number
Bit
Mnemonic
Function
7–2 — Reserved. These bits are undefined; for compatibility with future devices,
do not modify these bits.
1 TC1 Transfer Complete 1:
0 = Disables Transfer Complete interrupts.
1 = Connects channel 1’s transfer complete signal to the interrupt
control unit’s DMAINT input.
Note: When channel 1 is in chaining mode (DMACHR.2=1 and
DMACHR.0=1), this bit is a don’t care.
0 TC0 Transfer Complete 0:
0 = Disables Transfer Complete interrupts.
1 = Connects channel 0’s transfer complete signal to the interrupt
control unit’s DMAINT input.
Note: When channel 0 is in chaining mode (DMACHR.2=1 and
DMACHR.0=0), this bit is a don’t care.