Milnor C4A, Руководство пользователя, Страница: 35 / 36

Ë 8088 Processor Boards
Without Memory Expansion Board
—See the table of EPROM loca-
tions (below) and FIGURE 7. If the set consists of only one EPROM, install it in socket A of FIGURE 7. If two
EPROMs comprise the set, install EPROM #2 in socket A and EPROM #1 in socket B.
Always install highest
numbered EPROM in socket A. If the set consists of more than two EPROMs, a Memory Expansion Board must
be present in the machine along with the processor board.
Ë 8088 Processor Boards With Memory Expansion Board
—See the table of EPROM locations
below and FIGURE 7. If the EPROM set consists of three or more EPROMs, install the two highest numbered
EPROMs (e.g., EPROMs #3 and #4 of a four-chip set)
on the processor board , with the highest numbered E-PROM
(EPROM #4 of a four-chip set) in socket A, and the EPROM with the second highest number (EPROM #3 of a
four-chip set) in socket B.
Install the remaining EPROM(s) on the Memory Expansion Board with the highest
numbered of the remaining EPROMs (e.g., EPROM #2 of a four-chip set) in socket IC-1 on the Memory Expansion
Board and EPROM #1 in socket IC-2.
EPROM Locations on 8088 Processor Board
and Memory Expansion Board
E-PROM Location by Socket
(see FIGURE 4)
EPROMS in Set A B IC-1 IC-2
4-chip set 4 3 2 1
3-chip set 3 2 1 —
2-chip set 2 1 — —
1-chip set 1 — — —
B
C
Î FIGURE 6
(MSSM0217AE)
Î 1MTA-31 on 8088 Board
(wires not shown for clarity)
Î FIGURE 7
(MSSM0217AE)
Î 8088 Processor Board and Optional Memory Expansion Board
HOW TO CHANGE EPROMS IN MICROPROCESSORS
AND WHERE TO CHECK THE DC VOLTAGES
MSSM0217AE/9020IV (4 of 5)