Mercurial > hg > Members > kono > nitros9-code
view level1/cmds/cobbler.asm @ 1325:84ea83668304
Redid comments, reset all rev nibbles that weren't explictly set to 0
| author | boisy |
|---|---|
| date | Thu, 04 Sep 2003 23:06:16 +0000 |
| parents | 0c3d94b71b37 |
| children | 20841f236e32 |
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******************************************************************** * Cobbler - Write OS9Boot to a disk * * $Id$ * * Edt/Rev YYYY/MM/DD Modified by * Comment * ------------------------------------------------------------------ * 7 ????/??/?? * From Tandy OS-9 Level Two VR 02.00.01. * * 2002/07/20 Boisy G. Pitre * Modified source to allow for OS-9 Level One and Level Two assembly. nam Cobbler ttl Write OS9Boot to a disk * Disassembled 02/07/06 13:08:41 by Disasm v1.6 (C) 1988 by RML IFP1 use defsfile use rbfdefs ENDC DOHELP set 0 tylg set Prgrm+Objct atrv set ReEnt+rev rev set $00 edition set 7 mod eom,name,tylg,atrv,start,size org 0 lsn0buff rmb 26 newbpath rmb 1 devpath rmb 3 u001E rmb 2 fullbnam rmb 20 this buffer hodls the entire name (i.e. /D0/OS9Boot) u0034 rmb 16 u0044 rmb 7 u004B rmb 2 u004D rmb 1 u004E rmb 16 pathopts rmb 20 u0072 rmb 2 u0074 rmb 10 bffdbuf rmb 16 u008E rmb 1 u008F rmb 7 u0096 rmb 232 bitmbuf rmb 1024 IFGT Level-1 u057E rmb 76 u05CA rmb 8316 ENDC size equ . name fcs /Cobbler/ fcb edition L0015 fcb $00 fcb $00 IFNE DOHELP HelpMsg fcb C$LF fcc "Use: COBBLER </devname>" fcb C$LF fcc " to create a new system disk" fcb C$CR ENDC WritErr fcb C$LF fcc "Error writing kernel track" fcb C$CR fcb C$LF fcc "Error - cannot gen to hard disk" fcb C$CR FileWarn fcb C$LF fcc "Warning - file(s) present" fcb C$LF fcc "on track 34 - this track" fcb C$LF fcc "not rewritten." fcb C$CR BootFrag fcb C$LF fcc "Error - OS9boot file fragmented" fcb C$CR IFGT Level-1 RelMsg fcb C$LF fcc "Error - can't link to Rel module" fcb C$CR ENDC BootName fcc "OS9Boot " fcb $FF RelNam fcc "Rel" fcb $FF start clrb lda #PDELIM cmpa ,x lbne ShowHelp os9 F$PrsNam lbcs ShowHelp lda #PDELIM cmpa ,y lbeq ShowHelp leay <fullbnam,u L013C sta ,y+ lda ,x+ decb bpl L013C sty <u001E ldd #PENTIR*256+C$SPAC std ,y++ leax <fullbnam,u lda #UPDAT. os9 I$Open sta <devpath lbcs ShowHelp ldx <u001E leay >BootName,pcr lda #PDELIM L0162 sta ,x+ lda ,y+ bpl L0162 pshs u clra clrb tfr d,x tfr d,u lda <devpath os9 I$Seek seek to 0 lbcs Bye puls u leax lsn0buff,u ldy #DD.DAT $1A lda <devpath os9 I$Read read LSN0 lbcs Bye ldd <DD.BSZ get size of bootfile currently beq L019F branch if none leax <fullbnam,u os9 I$Delete delete existing bootfile clra clrb sta <DD.BT std <DD.BT+1 std <DD.BSZ lbsr WriteLSN0 L019F lda #WRITE. ldb #READ.+WRITE. leax <fullbnam,u os9 I$Create create new bootfile sta <newbpath lbcs Bye branch if error IFGT Level-1 * OS-9 Level Two: Copy first 90 bytes of system direct page into our space * so we can figure out boot location and size, then copy to our space leax >L0015,pcr tfr x,d ldx #$0000 ldy #$0090 pshs u leau >u057E,u os9 F$CpyMem lbcs Bye puls u leax >L0015,pcr tfr x,d ldx >u05CA,u ldy #$0010 pshs u leau <u004E,u os9 F$CpyMem puls u lbcs Bye leax >u057E,u ldd <D.BtPtr,x pshs b,a ldd <D.BtSz,x std <DD.BSZ pshs b,a L01F7 ldy #$2000 cmpy ,s bls L0203 ldy ,s L0203 pshs y leax <u004E,u tfr x,d ldx $04,s pshs u leau >u057E,u os9 F$CpyMem lbcs Bye puls u ldy ,s leax >u057E,u lda <newbpath os9 I$Write lbcs Bye puls b,a ldy $02,s leay d,y sty $02,s nega negb sbca #$00 ldy ,s leay d,y sty ,s bne L01F7 leas $04,s ELSE * OS-9 Level One: Write out bootfile ldd >D.BTHI get bootfile size subd >D.BTLO tfr d,y in D, tfr to Y std <DD.BSZ save it ldx >D.BTLO get pointer to boot in mem lda <newbpath os9 I$Write write out boot to file lbcs Bye ENDC leax <pathopts,u clrb * ldb #SS.Opt lda <newbpath os9 I$GetStt lbcs Bye lda <newbpath os9 I$Close lbcs ShowHelp pshs u ldx <pathopts+(PD.FD-PD.OPT),u lda <pathopts+(PD.FD+2-PD.OPT),u * Now X and A hold file descriptor sector LSN of newly created OS9Boot clrb tfr d,u lda <devpath os9 I$Seek seek to os9boot file descriptor puls u lbcs Bye leax <bffdbuf,u ldy #256 os9 I$Read read in filedes sector lbcs Bye ldd >bffdbuf+(FD.SEG+FDSL.S+FDSL.B),u lbne IsFragd branch if fragmented * Get and save bootfile's LSN ldb >bffdbuf+(FD.SEG),u stb <DD.BT ldd >bffdbuf+(FD.SEG+1),u std <DD.BT+1 lbsr WriteLSN0 ldd #$0001 lbsr Seek2LSN leax >bitmbuf,u ldy <DD.MAP lda <devpath os9 I$Read read bitmap sector(s) lbcs Bye ldd #Bt.Track*256+$00 ldy #$0004 lbsr L03A7 bcc L0304 ldd #Bt.Track*256+$00 lbsr Seek2LSN leax <u0044,u ldy #$0007 lda <devpath os9 I$Read lbcs Bye leax <u0044,u ldd ,x cmpa #'O lbne TrkAlloc cmpb #'S lbne TrkAlloc lda $04,x cmpa #$12 beq L02F7 ldd #Bt.Track*256+$0F ldy #$0003 lbsr L03A7 lbcs TrkAlloc L02F7 clra ldb <DD.TKS tfr d,y ldd #Bt.Track*256+$00 lbsr L03FD bra L0315 L0304 ldd #Bt.Track*256+$04 ldy #$000E lbsr L03A7 lbcs TrkAlloc bra L02F7 L0315 ldd #$0001 lbsr Seek2LSN Seek to bitmap sector on disk leax >bitmbuf,u ldy <DD.MAP lda <devpath os9 I$Write write updated bitmap lbcs Bye IFGT Level-1 * OS-9 Level Two: Link to Rel, which brings in boot code pshs u lda #Systm+Objct leax >RelNam,pcr os9 F$Link lbcs NoRel tfr u,d tfr module header to D puls u get statics ptr subd #$0006 std <u004B,u save pointer lda #$E0 anda <u004B,u ora #$1E ldb #$FF subd <u004B,u addd #$0001 tfr d,y ldd #Bt.Track*256+$00 lbsr Seek2LSN lda <devpath ldx <u004B,u ELSE * OS-9 Level One: Write out data at $EF00 ldd #Bt.Track*256+$00 lbsr Seek2LSN lda <devpath ldx #Bt.Start ldy #Bt.Size ENDC os9 I$Write lbcs WriteBad os9 I$Close lbcs Bye clrb lbra Bye * Get absolute LSN * Returns in D AbsLSN pshs b ldb <DD.FMT get format byte andb #$01 check how many sides? beq L037F branch if 1 ldb #$02 else assume 2 bra L0381 L037F ldb #$01 L0381 mul lda <DD.TKS mul addb ,s adca #$00 leas $01,s rts * Returns bit in bitmap corresponding to LSN in A L038C pshs y,b * Divide D by 8 lsra rorb lsra rorb lsra rorb leax d,x puls b leay <L03A1,pcr andb #$07 lda b,y puls pc,y L03A1 fcb $80,$40,$20,$10,$08,$04,$02,$01 L03A7 pshs y,x,b,a bsr AbsLSN go get absolute LSN leax >bitmbuf,u point X to our bitmap buffer bsr L038C sta ,-s save off bmi L03CB lda ,x sta <u004D L03BB anda ,s bne L03F7 leay -$01,y beq L03F3 lda <u004D lsr ,s bcc L03BB leax $01,x L03CB lda #$FF sta ,s bra L03DB L03D1 lda ,x anda ,s bne L03F7 leax $01,x leay -$08,y L03DB cmpy #$0008 bhi L03D1 beq L03ED lda ,s L03E5 lsra leay -$01,y bne L03E5 coma sta ,s L03ED lda ,x anda ,s bne L03F7 L03F3 andcc #^Carry bra L03F9 L03F7 orcc #Carry L03F9 leas $01,s puls pc,y,x,b,a L03FD pshs y,x,b,a lbsr AbsLSN get absolute LSN leax >bitmbuf,u bsr L038C sta ,-s bmi L041C lda ,x L040E ora ,s leay -$01,y beq L043A lsr ,s bcc L040E sta ,x leax $01,x L041C lda #$FF bra L0426 L0420 sta ,x leax $01,x leay -$08,y L0426 cmpy #$0008 bhi L0420 beq L043A L042E lsra leay -$01,y bne L042E coma sta ,s lda ,x ora ,s L043A sta ,x leas $01,s puls pc,y,x,b,a Seek2LSN pshs u,y,x,b,a lbsr AbsLSN pshs a tfr b,a clrb tfr d,u puls b clra tfr d,x lda <devpath os9 I$Seek bcs WriteBad puls pc,u,y,x,b,a WriteLSN0 pshs u added for OS-9 Level One +BGP+ clra clrb tfr d,x tfr d,u lda <devpath os9 I$Seek Seek to LSN0 puls u added for OS-9 Level One +BGP+ leax lsn0buff,u Point to our LSN buffer ldy #DD.DAT lda <devpath os9 I$Write Write to disk bcs Bye branch if error rts ShowHelp equ * IFNE DOHELP leax >HelpMsg,pcr ELSE clrb bra Bye ENDC L0477 pshs b lda #$02 ldy #256 os9 I$WritLn comb puls b Bye os9 F$Exit IsFragd leax >BootFrag,pcr clrb bra L0477 WriteBad leax >WritErr,pcr clrb bra L0477 TrkAlloc leax >FileWarn,pcr clrb bra L0477 IFGT Level-1 NoRel leax >RelMsg,pcr bra L0477 ENDC emod eom equ * end