Specifications

Jumper Configurations
Table A-2
ZT 8832 Jumper Descriptions (continued).
JUMPER # DESCRIPTION
W20 Numeric Data Processor Interrupt - enables
the Numeric Data Processor (NDP) to
generate a non-maskable interrupt in
response to an exception error. This jumper
must not be installed if the optional NDP is
unplugged.
W20 Operation
In Enables non-maskable interrupt
† Out Disables non-maskable interrupt
W21, W22 RAM Device Size - selects the address
range of the RAM devices to be plugged
into the RAM LOW and RAM HIGH
sockets. Address ranges are given in
hexadecimal format. See also W7 and W8
(page A-4) and W26 and W27 (page A-7).
W22 W21 Device RAM LOW RAM HIGH
† In In 32K x 8 0-07FFFh 08000-0FFFFh
In Out 128K x 8 0-1FFFFh 20000-3FFFFh
Out In 512K x 8 0-7FFFFh ---------
Out Out Not used --------- ---------
†Factory default jumper configuration.
A-6