IBM RT Series Hardware Reference Manual page 233

SHT BOO
I
BOI
B02
BOl
B04
BO,)
BOb
SHT B01
SHT 2 CPU LATCH
I j
CRT LATCH
OOTCLJ(
S/L
SHT 2 WE
SHT 4
GRAPHlCSlOW
~
t VHEHR
A6
SHT "
Ai
"""' " '
=
a:
~
g.
= =
n
~
c.
CO 22
CI 21
GPO 12
GPI II
2
Ull
§
l
00 H200
"
01
H201
&-
- -
')
02 H202
- -
b
Ol H20l
~
- -
1
04
H2O"
1i3
- -
()<;
H2O') ~
- -
8
Db
H20b
- -
q
l2
H200 ~
000 01 H2D1
H2DI
M2D2
1')1 001
UIO
H2Dl
17 002
11 CPU LATCH
ool
~~
CRT LATCH
MlD4 2
DQO
\I§
Iq CLK_
DQI
M2Db I')
DGZ UI
Ib
~~L
H207 17
~
.BAO 14
ool
VSS
AO
VSS
~
~
AI
BA2 I
I
VDD
~
~
A2
I')
row
A1
Il
Mlro
\ft§
A4
I"
AO
\~
A')
Rrrm
Ab
BA7 10
A7
!Il :
')
RAS
r-
Ib
CAS
TMS441b
4
HlOO
~
~
W
G
HlDI
- - -
Hl02
TI1S441b
---
InD~
~ - - -
H~D"
l3
- - -
H~D,)
- - -
H1Db
~J
H~DO ~
OQO
---
H~01
H~DI
UH~02
~I~~
UII
GRAPHICS CONTROL
H~O~
17 OQl
C2 SHT 8
m
0 SHT 8
:2
CDSELO
SHT 4
::c
COSH I SHT4
»
H200 SHT ... 6
:2
H201
I
I
n
H202
m
H20~ C
H204
CO)
H2D,)
H2Db
:%J
H207 SHT
C;.8
»
."
==
n
en
»
c
»
."
-t
m
:%J
HlOO SHT II
H~OI
I
1
Hl02
Hl0~
1110'+
1110')
HlOb
Hl07 SHT II
~
...
=
"C
II
BAD
e:
BAI
n B'A2
rIJ
BAl
BA"
>
BA,)
C.
BAb
=
SHT l BA1
SHT 2 RAS2
"C
t t
RASl
"' "
B CASO
~
SHT 2
WE
\C
~
OQO ~
OQI
I~ 002
U2
BAO 14
OO~
--- Ii=l AO
AI ---
~
A2
- - -
~
A~
BA4
- - -
I
\i;t
A4
---
A')
- - -
BAb b
Ab
Im----i'o
"7
..
iiAS
-
Ib
CAS
TMS441b
4
\I
rG
THS441b
~
Enhanced Graphics Adapter Sheet 7 of 11