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[/] [thor/] [trunk/] [software/] [boot_tb/] [DisplayChar.asm] - Diff between revs 5 and 12

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Rev 5	Rev 12
Line 21...	Line 21...
`;`	`;`
`; ============================================================================`	`; ============================================================================`
`;`	`;`
`;------------------------------------------------------------------------------`	`;------------------------------------------------------------------------------`
`; Display a character on the screen device`	`; Display a character on the screen device`
`; Expects the processor to be in 16 bit mode with 16 bit acc and 16 bit indexes`
`;------------------------------------------------------------------------------`	`;------------------------------------------------------------------------------`
`;`	`;`
`public DisplayChar:`	`public VBDisplayChar:`
`; push c1`	`addui r31,r31,#-40`
`; push pregs`	`sws c1,zs:[r31]`
`; push r2`	`sws pregs,zs:8[r31]`
`; push r3`	`sw r2,zs:16[r31]`
`; push r4`	`sw r3,zs:24[r31]`
`addui r27,r27,#-40`	`sw r4,zs:32[r31]`
`sws c1,[r27]`
`sws pregs,8[r27]`
`sw r2,16[r27]`
`sw r3,24[r27]`
`sw r4,32[r27]`
`ldi r2,#8`	`ldi r2,#8`
`sc r2,$FFDC0600`	`sc r2,$FFDC0600`
`zxb r1,r1`	`zxb r1,r1`
`lb r2,EscState`	`lb r2,EscState`
`tst p0,r2`	`tst p0,r2`
Line 65...	Line 59...
`cmpi p0,r1,#ESC`	`cmpi p0,r1,#ESC`
`p0.ne br _0003`	`p0.ne br _0003`
`ldi r1,#1`	`ldi r1,#1`
`sb r1,EscState`	`sb r1,EscState`
`exitDC:`	`exitDC:`
`; pop r4`	`lws c1,zs:[r31]`
`; pop r3`	`lws pregs,zs:8[r31]`
`; pop r2`	`lw r2,zs:16[r31]`
`; pop pregs`	`lw r3,zs:24[r31]`
`; pop c1`	`lw r4,zs:32[r31]`
`lws c1,[r27]`	`addui r31,r31,#40`
`lws pregs,8[r27]`
`lw r2,16[r27]`
`lw r3,24[r27]`
`lw r4,32[r27]`
`addui r27,r27,#40`
`rts`	`rts`
`_0003:`	`_0003:`
`bsr AsciiToScreen`	`ldi r4,#10`
	`sc r4,$FFDC0600`
	`bsr VBAsciiToScreen`
`lhu r2,NormAttr`	`lhu r2,NormAttr`
	`andi r2,r2,#-1024`
`or r1,r1,r2`	`or r1,r1,r2`
`lcu r3,VideoPos`	`lcu r3,VideoPos`
`lhu r2,Vidptr`	`lhu r2,Vidptr`
`ldi r4,#9`
`sc r4,$FFDC0600`
`sh r1,hs:[r2+r3*4]`	`sh r1,hs:[r2+r3*4]`
`lcu r1,CursorX`	`lcu r1,CursorX`
`addui r1,r1,#1`	`addui r1,r1,#1`
`lcu r2,Textcols`	`lcu r2,Textcols`
`cmp p0,r1,r2`	`cmp p0,r1,r2`
Line 123...	Line 113...
`sc r1,CursorY`	`sc r1,CursorY`
`bsr SyncVideoPos`	`bsr SyncVideoPos`
`br exitDC`	`br exitDC`

`processEsc:`	`processEsc:`
	`ldi r4,#22`
	`sc r4,$FFDC0600`
`lb r2,EscState`	`lb r2,EscState`
`cmpi p0,r2,#-1`	`cmpi p0,r2,#-1`
`p0.ne br .0006`	`p0.ne br .0006`
`cmpi p0,r1,#'T' ; clear to EOL`	`cmpi p0,r1,#'T' ; clear to EOL`
`p0.ne br .0003`	`p0.ne br .0003`
Line 217...	Line 209...
`ldi r1,#%001001001_011011011_00_00000000`	`ldi r1,#%001001001_011011011_00_00000000`
`sh r1,NormAttr`	`sh r1,NormAttr`
`br exitDC`	`br exitDC`

`doBackSpace:`	`doBackSpace:`
	`ldi r4,#23`
	`sc r4,$FFDC0600`
`lc r2,CursorX`	`lc r2,CursorX`
`tst p0,r2`	`tst p0,r2`
`p0.eq br exitDC ; Can't backspace anymore`	`p0.eq br exitDC ; Can't backspace anymore`
`lcu r3,VideoPos`	`lcu r3,VideoPos`
`.0002:`	`.0002:`

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[/] [thor/] [trunk/] [software/] [boot_tb/] [DisplayChar.asm] - Diff between revs 5 and 12