012B Jumpers For - Intel SYSTEM 310 Configuration Manual

012B Board Jumpers
System 310
COMBINA ION 6 — HE 012B, PROCESSOR, AND 304 BOARDS
Combination 6, although not part of a preconfigured system, contains
768K bytes of R M. It consists of 128K bytes from the processor
board plus 128K bytes from the 304 MULTIMODULE board, and 512K
bytes from the 012B board.
The advantage of combining boards this way is that you can add
memory without consuming an extra card slot. Simply mounting the
304 board directly onto the processor board. The jumpers on the
processor board determine the starting and ending addresses for this
combined 256K-byte block.
To complete the arrangement for combination 6 and maintain the
required
continguous block of R M, address the processor
board/MULTIMODULE board assembly from 00000H through
3FFFFH. (See the System 310 Processor Configuration Guide: 86/30
Single Board Computer for the jumper changes.) Then, address the
012B board starting at the next available location, 4000 OH through
BFFFFH. Table 3-2 shows how to set the jumpers on the 012B board
for these addresses.
Note: "X" means connected to ground. means not connected.
Table 3-2. 012B Jumpers for ddress Range 40000H-BFFFFH
Upper Bound
Lower Bound
Jumper Connection
Jumper
Connection
7-15
—
23-24
X
8-16
—
25-26
X
9-17
—
27-28 X
10-18
—
29-30 X
11-19 X 31-32
—
12-20
—
33-34
X
13-21 X
35-36
X
14-22
X
37-38 X
COMBINA ION 7 — HE 012B, PROCESSOR, AND 056A BOARDS
You can expand memory to 896K bytes by using the three boards
listed as combination 7 (from Table 1-1). ddress the boards so that
the the processor board memory block is lowest, followed by the
056 , then the 012B boards.
ddress the 128K bytes of memory on the processor board from
00000H through 1FFFFH, as recommended for all tested
configurations. Following this convention, you will not have to
change address jumpers on the processor board unless you are adding
or removing a 304 board.
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