9600 Service Manual - gmecorp-usa.com

OVERVIEW
C-ARM SOFTWARE
The 9600 C-Arm software is loaded from a PCMCIA style SRAM card to RAM located
on the Technique Processor PCB, during system start-up. The software remains
resident in the RAM until the generator is turned off. The SRAM card is located in the
solid state disk drive on the Technique Processor PCB.
START-UP AND SOFTWARE BOOT
The key events which occur during start-up are:
1. Power supplies stabilize at the proper voltage levels and power is applied to all the
microprocessor circuits.
2. Microprocessors are reset and program control is transferred to the boot EPROM
(U14) on the Technique Processor PCB .
3. Technique Processor PCB boot EPROM (U14) software performs critical hardware
setups, executes various hardware tests, and loads the boot sectors from the
SRAM card.
Critical hardware setup includes initializing all DMA, memory, I/O and bus-oriented
devices on the Technique Processor PCB. This setup involves the following steps:
A. Initialize hardware lines to a defined state
B. Initialize and test memory
C. Display boot codes
4. Software routines in the Technique Processor PCB boot EPROM (U14) load the
boot sectors from the SRAM card.
5. Boot sectors, once loaded into the Technique Processor PCB RAM (U16-U19), load
the operating system into memory. After the operating system is initialized it
assumes program control.