IBM XT 5160

(SH.3)
(SH.6)
DClK (SH.4)
RDYTODMA
(SH.4)
DMAAEN'
(SH.4,5)
AENBRD
(SH.1,5)
AEN'
(SH.l,3)
DMAWAIT'
(SH.l)
HOLDA
(SH.4)
RESETDRV'
(SH.9,10)
RESETDRV
(SH.l0,11)
NMI (SH.l)
)C
V
YMEMR'
• +XMEMR
.....----------------- RDY'/WAIT (SH.l)
lS04
8
• I/O CHCK (SH.9)
U89
lS04
ClK88 -----l..f ~c8~ ClK' I
(SH.l)
(SH.l0,ll)
I10CHROY
(SH.5)
XIOR'
(SH.5)
XIOW'
(SH.4)
DACKOBRD'
(SH.5)
XMEMR'
(SH.3)
DMACS'
(SH.l)
lOCK'
(SH.l)
Sfi
(SH.l)
SQi
(SH.4)
HRQDMA
(SH.l)
RESET
(SH.5)
ClK
(SH.l)
N.P.NPI
(SH.9)
N.P.INSTlSW
(SH.6)
P(j(i
(SH.5)
XD7
(SH.3)
WRTNMIREG'
(SH.l0,ll)
I/OCHCK
+
(SH.9)
ENABlEIIOCK'
~
I
W
0"'\
7JJ.
t<
TJ:J
~
~
a
==
=
=
..
Q..
64/256K System Board (Sheet 2 of 11 )