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- ; FILE: Source:modules/ramlibstack.ASM REV: 2 --- make ramlib stack 8k
-
- ;
- ; Make ramlib stack 8k
- ; ~~~~~~~~~~~~~~~~~~~~
- ; This module hacks ramlib initialization so that it will allocate
- ; 8k stack instead of original 2k. Substitutes MCPRamlibPatch.
- ;
- ; Written by Harry Sintonen.
- ; This source code is Public Domain.
- ;
-
- incdir "include:"
- include "blizkickmodule.i" ; Some required...
-
- SECTION PATCH,CODE
- _DUMMY_LABEL
- BK_PTC
-
- ; Code is run with following incoming parameters:
- ;
- ; a0=ptr to ROM start (buffer) eg. $1DE087B8
- ; a1=ptr to ROM start (ROM) eg. $00F80000 (do *not* access!)
- ; d0=ROM lenght in bytes eg. $00080000
- ; a2=ptr to _FindResident routine (will search ROM buffer for resident tag):
- ; CALL: jsr (a2)
- ; IN: a0=ptr to ROM, d0=rom len, a1=ptr to resident name
- ; OUT: d0=ptr to resident (buf) or NULL
- ; a3=ptr to _InstallModule routine (can be used to plant a "module"):
- ; CALL: jsr (a3)
- ; IN: a0=ptr to ROM, d0=rom len, a1=ptr to module, d6=dosbase
- ; OUT: d0=success
- ; a4=ptr to _Printf routine (will dump some silly things (errormsg?) to stdout ;-)
- ; CALL: jsr (a4)
- ; IN: a0=FmtString, a1=Array (may be 0), d6=dosbase
- ; OUT: -
- ; d6=dosbase, a6=execbase
- ;
- ; Code should return:
- ;
- ; d0=true if succeeded, false if failed.
- ; d1-d7/a0-a6 can be trashed. a7 *must* be preserved! ;-)
-
- cmp.w #37,($C,a0)
- bhs.b .cont
- moveq #0,d0
- rts
-
- .cont movem.l d0/a0-a1,-(sp)
-
- lea (ramlibname,pc),a1
- jsr (a2)
- tst.l d0
- beq .fail
- move.l d0,a5
-
- move.l a5,a0 ; a0=beg of search
- lea (2048,a0),a1 ; a1=end of search
-
- move.l #$2608E48B,d1
- move.l #$7808E19C,d2
- move.l #$4EAEFF76,d3
-
- .find addq.l #2,a0
- cmp.l a1,a0
- bhs.b .not_found
- cmp.l (a0),d1
- bne.b .find
- cmp.l (4,a0),d2
- bne.b .find
- cmp.l (8,a0),d3
- bne.b .find
-
- move.w #$7820,(4,a0)
- moveq #1,d0
- bra.b .noerr
-
- .not_found move.l (RT_IDSTRING,a5),a0
- sub.l (2*4,sp),a0 ;[a1]
- add.l (1*4,sp),a0 ;[a0]
- move.l a0,-(sp)
- move.l sp,a1
- lea (fmt1,pc),a0
- jsr (a4)
- addq.l #4,sp
-
- .fail moveq #0,d0
- .noerr lea (3*4,sp),sp
- rts
-
-
- ramlibname dc.b 'ramlib',0
- fmt1 dc.b 'Couldn''t patch %s',0
-
-
- SECTION VERSION,DATA
-
- dc.b '$VER: ramlibstack_PATCH 1.0 (19.10.98)',0
-
-