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$ DB 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
To use Hex you need a pure
binary file. With Nasm
you just compile it with no headers or offset.
I have
included an a20 test routine as an example.
The .asm
file is in Nasm format without headers or offset.
The
.bin file is the compiled version. The .hex
file is
the output from Hex.
To use the .hex file in Sphinx
C-- is easy. Just make
a subroutine and copy the .hex file into it
and call the
subroutine.
void a20_test()
{
/*
A routine
to test the a20 line.
Returns
AL=0 for on or AL=1 for off
*/
// HEX Binary to HEX converter
// by Scott Billingsley
// Input file :a20test.bin Output file
:a20test.hex
$ DB 0X31,0XC0,0X8E,0XE0,0X48,0X8E,0XE8,0X64
$ DB 0XA0,0X00,0X00,0X88,0XC4,0XF6,0XD0,0X65
$ DB 0X86,0X06,0X10,0X00,0X64,0X3A,0X26,0X00
$ DB 0X00,0X65,0XA2,0X10,0X00,0X74,0X05,0XB0
$ DB 0X01,0XE9,0X02,0X00,0XB0,0X00
}
Now a call to a20_test() will run
the code and return
AL.
This should allow for the short
comings of Sphinx C--.
This code ,for example, uses calls that Sphinx
C-- doesn't
support but Nasm does.
You can download
a copy here.. HEX.ZIP
If you have a comment or question,
please feel free
to send me an
Email
.