Hardware manual

1 Specification EUROCOM-17-5xx
10 Hardware Manual
1.3.3 Basic EPROM After reset, the basic EPROM is mapped to $0000.0000 so the initial stack
pointer and reset vector can be read. During initialization, it is mapped to
its normal address ($FE80.0000) and the DRAM is located at address
$0000.0000. The basic EPROM is accessed with six wait-states (120 ns
access time) per byte at 40 MHz.
The software in the basic EPROM (RMon) initializes all hardware
according to the parameters in the basic EPROM or the NVRAM
($FEC2.0000).
Reprogramming is possible when the appropriate jumpers are set.
1.3.4 User EPROM The pin assignment of the 32-pin socket corresponds with the JEDEC
standard. The socket is designed for use with 32-pin EPROMs only. These
EPROM types range from 1Mb up to 8Mb (27C010 to 27C080).
The EPROM access time is programmable via IOC-2 register from 4 to 36
wait-states (60ns to 810ns maximum access time).