URL https://opencores.org/ocsvn/plasma/plasma/trunk

Subversion Repositories plasma

[/] [plasma/] [trunk/] [tools/] [opcodes.asm] - Diff between revs 100 and 111

Rev 100	Rev 111
Line 23...	Line 23...
`#These four instructions must be the first instructions`	`#These four instructions must be the first instructions`
`#convert.exe will correctly initialize $gp`	`#convert.exe will correctly initialize $gp`
`lui $gp,0`	`lui $gp,0`
`ori $gp,$gp,0`	`ori $gp,$gp,0`
`#convert.exe will set $4=.sbss_start $5=.bss_end`	`#convert.exe will set $4=.sbss_start $5=.bss_end`
`ori $4,$0,0`	`lui $4,0`
`ori $5,$0,0`	`ori $4,$4,0`
	`lui $5,0`
	`ori $5,$5,0`
	`lui $sp,0`
	`ori $sp,$sp,0xfff0`

`mtc0 $0,$12 #disable interrupts`	`mtc0 $0,$12 #disable interrupts`
`ori $20,$0,0xffff #serial port write address`	`ori $20,$0,0xffff #serial port write address`
`ori $21,$0,'\n' # letter`	`ori $21,$0,'\n' # letter`
`ori $22,$0,'X' #'X' letter`	`ori $22,$0,'X' #'X' letter`