Specifications

Getting Started
MEMORY
The ZT 8832 includes memory that is addressable by the local CPU
and memory that is dual ported between the local and STD bus CPU.
This is shown in two memory maps: Figure 2-3 illustrates the address
ranges of the memory devices available to the local CPU, and
Figure 2-4 illustrates the address ranges of the memory devices
available to the STD bus CPU.
The local ROM is a single memory device located in a 32-pin JEDEC
socket. While this socket is jumper configurable to support 8K, 16K,
32K, 64K, 128K, 256K, and 512 Kbyte devices, the ROM address
range is always 88000h through FFFFFh. This means that 8K, 16K,
32K, 64K, 128K, and 256 Kbyte devices are redundantly mapped, and
only 480 Kbytes of the 512 Kbyte device is used. Please note that
while the 256K and 512 Kbyte devices are supported, they may not be
currently available. The access time of the local ROM device must
not be greater than 250 ns. This ROM is not addressable by the STD
bus CPU.
FFFFFh
88000h
87FFFh
00000h
Local ROM
Dual Port RAM
Local RAM
80000h
7FFFFh
Figure 2–3. Local CPU Memory.
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