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Add Heap initialization, and 68000/68010 support

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Laurent Vivier 2005-05-20 00:24:13 +00:00
parent 774dc5a59f
commit 779e3bc3c3
1 changed files with 21 additions and 0 deletions
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@ -50,6 +50,14 @@
.endif /* SCSI_SUPPORT */
.equ ROMBase, 0x2ae
.equ SysZone, 0x2a6
.equ TheZone, 0x2a6
.macro SetApplBase
.short 0xa057
.endm
.equ CPUFlag, 0x012F
.macro StripAddress
.short 0xA055
@ -183,12 +191,24 @@ ioPosOffset: /* ioPosOffset : positionning offset */
.align 4
start:
moveal SysZone,%a0
addal %pc@(SysHeapSize),%a0
SetApplBase
movel SysZone,TheZone
/* is a 32bit aware ROM ? */
movea.l ROMBase,%a0
move.w 8(%a0), %d1 /* read ROM id */
cmp.w #0x0178, %d1 /* only 24bit ROM */
bls.S bit32_ok
/* is a 32bit aware processor ? */
cmp.w #1, CPUFlags /* Is 68000 or 68010 */
bls.S bit32_ok
/* test if we are in 32bit mode */
move.l #-1, %d0
@ -229,6 +249,7 @@ bit32_ok:
lea ioReqCount(%pc),%a0
move.l (%a0), %d0
.endif
add.l #4, %d0
NewPtr
move.l %a0, %d0