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Debugger General Information
3
If the code being executed in dual-port RAM is to reenter the debug
monitor, a TRAP #15 call using function $0063 (SYSCALL .RETURN)
returns control to the monitor with a new display prompt. Note that every
time the debug monitor returns to the prompt, an R is moved into the
MPCR to indicate that control can be transferred once again to a specified
RAM location.
GCSR Method
A remote processor can initiate program execution in the local
MVME162LX dual-port RAM by issuing a remote GO command using
the VMEchip2 Global Control and Status Registers (GCSR). The remote
processor places the controller’s execution address in general purpose
registers 0 and 1 (GPCSR0 and GPCSR1). The remote processor then sets
bit 8 (SIG0) of the VMEchip2 LM/SIG register. This causes the controller
to install breakpoints and begin execution. The result is identical to the
MPCR method (with status code B) described in the previous section.
The GCSR registers are accessed in the VMEbus short I/O space. Each
general purpose register is two bytes wide, occurring at an even address.
The general purpose register number 0 is at an offset of $8 (local bus) or
$4 (VMEbus) from the start of the GCSR registers. The local bus base
address for the GCSR is $FFF40100. The VMEbus base address for the
GCSR depends on the group select value and the board select value
programmed in the Local Control and Status Registers (LCSR) of the
controller. The execution address is formed by reading the GCSR general
purpose registers in the following manner:
The address appears as:
GPCSR0 used as the upper 16 bits of the address
GPCSR1 used as the lower 16 bits of the address
GPCSR0 GPCSR1
Summary of Contents for MVME162LX 200 Series
Page 1: ...MVME162LX 200 300 Series Embedded Controller Installation and Use V162LX2 3A IH3 ...
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Page 66: ...1 52 Computer Group Literature Center Web Site Board Level Hardware Description 1 ...
Page 84: ...2 18 Computer Group Literature Center Web Site Hardware Preparation and Installation 2 ...
Page 108: ...3 24 Computer Group Literature Center Web Site Debugger General Information 3 ...
Page 158: ...C 2 Computer Group Literature Center Web Site C ...
Page 164: ...Ethernet Interconnections E 2 Computer Group Literature Center Web Site E ...
Page 200: ...J 4 Computer Group Literature Center Web Site J ...
Page 208: ...Index IN 8 Computer Group Literature Center Web Site I N D E X ...