using the bootstrap loader
using the bootstrap loader
using the bootstrap loader
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CONFIGURING THE FIRST STAGE<br />
The syntax of <strong>the</strong> macro is<br />
where:<br />
%BIST ( address)<br />
address Address of <strong>the</strong> CPU board's BIST program. This parameter must be<br />
entered in <strong>the</strong> form BASE:OFFSET (for example, 1234:5678). To<br />
determine <strong>the</strong> address of your CPU board's BIST program, refer to <strong>the</strong><br />
hardware reference manual for that board.<br />
3.2.2 %COPV Macro (MULTIBUS® II Only)<br />
3-10<br />
The %COPY macro is used with 386/116- and 386/120-based systems. If your system is<br />
not of this type, do not include <strong>the</strong> %COPY macro in <strong>the</strong> BS 1MB2.A86 file.<br />
Both iSBC 386/116- and iSBC 386/120-based systems locate EPROM memory at <strong>the</strong> top<br />
of <strong>the</strong> 4 gigabyte address space supported by <strong>the</strong> 803861101 upon reset. However, <strong>the</strong> first<br />
stage of <strong>the</strong> Bootstrap Loader must execute within <strong>the</strong> first megabyte of address space<br />
(real mode). Because <strong>the</strong> first stage must be repositioned within memory, you must use<br />
<strong>the</strong> %COPY macro for any application where <strong>the</strong> EPROM memory is mapped outside of<br />
<strong>the</strong> first megabyte of address space upon reset.<br />
In contrast, <strong>the</strong> iSBC 386/2X and iSBC 386/3X systems locate EPROM memory at <strong>the</strong> top<br />
of <strong>the</strong> first megabyte of memory space upon reset. Thus, <strong>the</strong> %COPY macro is<br />
unnecessary.<br />
This macro copies <strong>the</strong> first stage of <strong>the</strong> Bootstrap Loader from EPROM devices to <strong>the</strong> low<br />
megabyte of RAM. You should only specify this macro if you do not have a monitor<br />
installed and <strong>the</strong> Bootstrap <strong>loader</strong> executes first upon system reset.<br />
The syntax of <strong>the</strong> %COPY macro is as follows:<br />
where:<br />
src 10<br />
src hi<br />
dest 10<br />
dest hi<br />
count 10<br />
count hi<br />
The low word of <strong>the</strong> 24-bit physical source address.<br />
The high byte of <strong>the</strong> 24-bit physical source address.<br />
The low word of <strong>the</strong> 24-bit physical destination address.<br />
The high byte of <strong>the</strong> 24-bit physical destination address.<br />
The low word of <strong>the</strong> number of bytes in <strong>the</strong> first stage.<br />
The high byte of <strong>the</strong> number of bytes in <strong>the</strong> first stage.<br />
Bootstrap Loader