Service manual
Page 1Installation Instructions: AM-338 / AM-339 RJE Board Set
1.0INTRODUCTION
This document describes the RJE AM-338/AM-339 board set installation for Alpha Micro
AM-1600 (Desktop and Deskside) and Eagle series computers. It’s written for the
experienced Alpha Micro Service Technician, so if you do not feel comfortable
performing the hardware procedures discussed below, please contact your Alpha Micro
Dealer or the Alpha Micro Technical Support Group for help.
2.0DESCRIPTION
The AM-338/AM-339 board set provides a bisync interface for your computer, allowing
communication with IBM mainframes when used in conjunction with AlphaRJE software.
The AM-338 board provides buffering, interrupt handling, and decoding functions
required by your computer’s serial I/O interface. The AM-339 board is a single board
computer, software compatible with the AM-330 board used in AMOS computers that
support the 60-pin AM-355 I/O bus.
Features:
Z-80 8 bit processor running at 4MHz.
Standard Z-80 peripherals for parallel data transfer, serial transfer, and
clock/counter functions.
64K static RAM memory, 8K bootstrap PROM.
Dual phantoms for initial processor reset and bootstrap PROM enable.
Programmable interrupt vector, software reset function.
Program download from host CPU.
3.0CONFIGURING THE AM-338/339 BOARDS
Before installing the AM-338/AM-339 board set, make sure both boards are configured
as shown in Figure 1; the AM-339 board must have its jumpers configured in the DTE
(default) position.
PDI-00338-00, Rev. A02