EM-2115APPENDIX 4A TROUBLESHOOTING MICROPROCESSOR BD ASSEMBLY
(EM21154A-5)
TABLE 4A.2
ADDRESS MAP EM-2110, EM-2115 ,EM-2135 RECEIVERS
HEX MEMORY AD-
DRESS
FUNCTION/
DESCRIPTION
IC DESIGNATION
PRIMARY ADDRESS
DECODER
A15, A14, A13
A1A3-U12
0000-1FFF
8k x 8 STATIC RAM
A1A3-U11
2000-3FFF
8k x 8 STATIC RAM
A1A3-U10
4000-5FFF
8k x 8 STATIC RAM
A1A3-U9
6000-7FFF
8k x 8 STATIC RAM
A1A3-U8
8000
GPIB CONTROL
A1A3-U3
A000-BFFF
SECONDARY AD-
DRESS DECODER
A1A3-U32
C000-DFFF
8k x 8 EPROM
A1A3-U7
E000-FFFF
8k x 8 EPROM
A1A3-U6
SECONDARY AD-
DRESSES
A000
PIA #1 ATTEN CON-
TROL, FREQ. CON-
TROL (EM-2110, EM-
2115)
A1A3-U26
A200
PIA #2
A1A3-U25
A400
PIA #3
A1A3-U22
A600
PIA #4
A1A3-U24
A800
PIA #5
A1A3-U21
AA00
PIA #6 REMOTE TUNE
D/A (U36)
A1A3-U23
AC00
PIA #7 IF GAIN D/A
(EM-2115, EM-2135),
FREQ. A/D EM-2135
A1A3-U20
AE00
DVM A/D
A1A3-U34
B000
INDICATOR LEDs EM-
2110 FP BOARD
A1A2-U5
B200
KEYBOARD ENCOD-
ER:
FP BOARD EM-2115,
EM-2135
FP BOARD EM-2110
A1A2-U1
A1A2-U20
B400
INDICATOR LEDs EM-
2110 FP BOARD
A1A2-U2
B600
INDICATOR LEDs EM-
2110 FP BOARD
A1A2-U1
B800
INDICATOR LEDs EM-
2110 FP BOARD
ATTEN D
DVM EM-2115, EM-2135
FP BD
A1A2-U4
A1A2-U5
TABLE 4A.2, CONTD
Содержание EM-2115
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