Force SYS68K/CPU-30 R4, Техническое справочное руководство

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VMEPROM SYS68K/CPU-30 R4 Technical Reference Manual
Page 126
5.3 Power-up Sequence
After power up, the processor retrieves the initial stack pointer and
program counter from address locations 0
16
and 4
16
. These locations are
the first 8 bytes of the Boot ROM area. They are mapped down to address
0
16
for a defined start after reset or power up. Control is transferred to the
BIOS modules to perform all the necessary hardware initialization of the
CPU. The real-time kernel is started and the user interface of
VMEPROM is invoked as the first task. This sequence also reads the
Real-Time Clock (RTC) of the CPU board and initializes the software
clock of the kernel. If a terminal is connected to the terminal port of the
CPU board, the VMEPROM banner and the VMEPROM prompt ("?")
will be displayed upon power up or reset.
The default terminal port setup is as follows:
- Asynchronous communication
- 9600 Baud
- 8 data bits
- 1 stop bit
- No parity
- Hardware handshake protocol
If the above message does not appear, check the following:
1. Baud rate and character format setting of the terminal (default upon
delivery of the CPU board is 9600 Baud, 8 data bits, 1 stop bit, no
parity).
2. Cable connection from the CPU board to the terminal
3. Power supply, +5V, +12V, -12V must be present.
SEE ALSO: Refer to Section 2.5, ‘Serial I/O Channels,’ on page 21 and
to Section 3.9, ‘The DUSCC 68562,’ on page 58 for the pinning of the D-
Sub connector and the required handshake signals.
See Table 1, “Specifications for the CPU-30 R4 Board,” on page 7 for the
power consumption of the CPU board.
If everything goes well, the header and prompt are displayed on the
terminal and VMEPROM is now ready to accept commands.
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