If you had 1 MB of memory, did you upgrade to 4 MB of memory first?
Running ISDN *and* OSPF on a PM-2E in 1 MB would be pretty tight.
To expand the memory in a PortMaster 2, replace the four 256KB
by 9 (parity) 30-pin 70ns SIMMs with four 1MB SIMMs (providing 4MB of
memory). Mixing SIMMs is not supported. The PortMaster will
auto-detect the amount of memory at boot time. You can use either 3
chip or 9 chip SIMMs.
If you did have 4 MB of memory and it did that, contact Livingston Technical
Support at 800-458-9966 Mon-Fri 6am to 5pm PDT.
-- Carl Rigney cdr@livingston.com