A990 Cpu Card Switches; Figure 2-4. A990 Cpu Card Switches Sw1 And Sw2 - HP 1000 A990 Installation And Service Manual

A990 CPU Card Switches
The A990 CPU card contains two switches, SWI and SW2 (s,ee Figure 2-4). SWI is a momentary
action (push and release) reset switch that resets the A990 CPU card. SW2 is an eight-section
DIP switch (see Figure 2-5) that controls the following functions:
1. BOOT SELECT, which selects computer operations at power-up.
2. Autorestart override (Memory Lost), which sets the conditions under which autorestart
occurs.
2-4 Installation
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A bank of 4 LEOs is located on the lower side of the
board, directly below the upper bank of 8 LEOs.
Figure 2-4. A990 CPU Card Switches SW1 and SW2