X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp-cpm3.git/blobdiff_plain/1e1c17d3fc07e3783873a621d8f165a3f56ff01f..afbcea2d821d1166ae347338ae52a64f3ee51e57:/cbios/boot.180 diff --git a/cbios/boot.180 b/cbios/boot.180 index 2a43b75..566f190 100644 --- a/cbios/boot.180 +++ b/cbios/boot.180 @@ -3,7 +3,6 @@ public hwinit,?init,?ldccp,?rlccp - public f_cpu extrn boot,?conin @@ -11,10 +10,11 @@ extrn ioini1l,msginit,mmuinit,intinit,cpu_frq extrn prt0ini,gs_rtc extrn @civec,@covec,@aivec,@aovec,@lovec - extrn @cbnk,?bnksl + extrn @cbnk,?move,?xmove - include config.inc - include z180reg.inc + maclib z180reg.inc + maclib config.inc + maclib version.inc ccpsize equ 0c80h @@ -40,6 +40,7 @@ tpa$bank equ 0 hwinit: ld a,(INIDONE) + and 80h cp INIDONEVAL jr z,hwini_skip ld hl,hwini_tab @@ -53,21 +54,21 @@ hwini_skip: call cpu_frq ld (f_cpu),hl ld (f_cpu+2),de + call intinit ; setup interrupts and vectors ret ?init: ; ld hl,1000000000000000b ; assign console to AVRCON: - ld hl,0100000000000000b ; assign console to ASCI0: + ld hl,0010000000000000b ; assign console to ASCI1: ld (@civec),hl ld (@covec),hl ld hl,0000000000000000b ; assign printer to nothing: ld (@lovec),hl - ld hl,0100000000000000b ; assign AUX to ASCI0: + ld hl,0000000000000000b ; assign AUX to ASCI0: ld (@aivec),hl ld (@aovec),hl - call intinit ; setup interrupts and vectors call prt0ini ; init timer ei ld c,2 @@ -77,9 +78,9 @@ hwini_skip: ld (@cbnk),a ; right now in bank 0 call pr.inln ; print signon message - db 13,10,13,10,'CP/M Version 3.0, Z180-Stamp BIOS',13,10,0 - - call pr.inln + db 13,10,13,10,'CP/M Version 3.0, Z180-Stamp BIOS v' + defvers + db 13,10 db 'Estimated CPU clock [Hz]: ',0 ld hl,(f_cpu) @@ -89,79 +90,58 @@ hwini_skip: ret - cseg ; boot loading must be done from resident memory + cseg ; boot loading must be done from resident memory ; This version of the boot loader loads the CCP from a file ; called CCP.COM on the system drive (A:). - + ; First time, load the A:CCP.COM file into TPA ?ldccp: - ; First time, load the A:CCP.COM file into TPA ld c,resetdsk call bdos xor a - ld (ccp$fcb+15),a ; zero extent + ld (ccp$fcb+15),a ; zero extent ld hl,0 - ld (fcb$nr),hl ; start at beginning of file + ld (fcb$nr),hl ; start at beginning of file ld de,ccp$fcb - ld c,open ; open file containing CCP + ld c,open ; open file containing CCP call bdos inc a - jp z,no$ccp ; error if no file... + jp z,no$ccp ; error if no file... ld de,0100h ld c,setdma ; start of TPA call bdos ld de,128 - ld c,setmulti ; allow up to 16k bytes + ld c,setmulti ; allow up to 16k bytes call bdos ld de,ccp$fcb - ld c,read ; load the thing - call bdos ; read records - ; now, - ; copy CCP to bank 0 for reloading - ld hl,0100h - ld bc,ccpsize ; clone 3K, just in case - ld a,(@cbnk) - push af ; save current bank -ld$1: - ld a,tpa$bank - call ?bnksl ; select TPA - ld a,(hl) - push af ; get a byte - ld a,2 - call ?bnksl ; select extra bank - pop af - ld (hl),a ; save the byte - cpi ; bump pointer, drop count - jp pe,ld$1 - pop af - call ?bnksl ; restore original bank - ret - -no$ccp: ; here if we couldn't find the file - call pr.inln ; report this... - db 13,10,'BIOS Err on A: No CCP.COM file',0 + ld c,read ; load the thing + call bdos ; read records - call ?conin ; get a response - jp ?ldccp ; and try again + ; now, copy CCP to bank 0 for reloading + ld bc,2*256 + tpa$bank ; c: src$bnk, b: dst$bnk + jr mov_ccp + ; just copy in the other direction ?rlccp: + ld bc,tpa$bank*256 + 2 ; c: src$bnk, b: dst$bnk +mov_ccp: + call ?xmove ld hl,0100h - ld bc,ccpsize ; clone 3K -rl$1: - ld a,2 - call ?bnksl ; select extra bank - ld a,(hl) ; get a byte - ex af,af' - ld a,tpa$bank - call ?bnksl ; select TPA - ex af,af' - ld (hl),a ; save the byte - cpi ; bump pointer, drop count - jp pe,rl$1 + ld d,h + ld e,l + ld bc,ccpsize ; clone 3K, just in case + call ?move ret +no$ccp: ; here if we couldn't find the file + call pr.inln ; report this... + db 13,10,'BIOS Err on A: No CCP.COM file',0 + + call ?conin ; get a response + jr ?ldccp ; and try again + ccp$fcb:db 1,'CCP ','COM',0,0,0,0 ds 16 @@ -175,7 +155,7 @@ hwini_tab: db dcntl,CWAITIO ;wait states db ccr,M_NCD ;No Clock Divide db cmr,PHI_X2 ;X2 Clock Multiplier -;TODO: db omr, ;Operation Mode Control Register + db omcr,~M_IOC ;Operation Mode Control Register hwini0_e: db 0 ;stop mark