; CC.PROM.TEXT --------------------------------------------------------- ; ; CC.PROM -- Corvus CONCEPT Workstation PROM ; ; Copyright 1982 Corvus Systems, Inc. ; San Jose, California ; ; All Rights Reserved ; ; v 0.1 05-06-82 LEF Original program ; v 0.2 05-27-82 LEF Add keyboard driver (kb) ; Add display driver (mb) ; Add 8" Corvus floppy disk driver/boot ; Finds first local disk for booting ; OMNINET disk driver modifications ; v 0.3 06-21-82 LEF Add MACSBUG interface ; Add 5" floppy driver/boot ; Finds first floppy disk for booting ; Local disk driver modifications ; OMNINET disk driver modifications ; v 0.4 06-29-82 LEF Add time out to OMNINET short commands ; v 0.5 08-18-82 KB Modified MacsBug interface ; Modified Apple 5" floppy driver ; v 0.6 10-29-82 LEF Swap BACKSPACE and \ keys ; Modified display driver ; v 0.7 05-01-83 LEF Remove Apple floppy boot ; Add auto PROM boot ; OMNINET disk driver modifications ; KB Add DSDD floppy driver/boot (rev B) ; v 0.8 07-01-83 LEF Add Concept Plus, Uniplex, Venus support ; 09-14-83 KB Enhanced and changed Uniplex support ; v 1.0 01-18-84 KB fixed to Const II boot on omnidisk ; ;{!CC} Concept version 0.8 ;{!CP} Concept Plus version 0.8 ;{!UP} Uniplex version 0.8 ;{!VN} Venus version 0.8 ;----------------------------------------------------------------------- ;{!CP} {/SC} {UC} ;select generic Uniplex/Concept Plus 0.8 ;{!UP} {/SC} {UC} ;select generic Uniplex/Concept Plus 0.8 ;{!CC} {/SC} {CV} ;select generic Concept/Venus 0.8 ;{!VN} {/SC} {CV} ;select generic Concept/Venus 0.8 ; ;{!VN} {/SC} {DS} ;select units with a display 0.8 ;{!CC} {/SC} {DS} ;select units with a display 0.8 ;{!CP} {/SC} {DS} ;select units with a display 0.8 ; ;{!VN} {/SC} {MM} ;select units with a memory mgt board 0.8 ;{!UP} {/SC} {MM} ;select units with a memory mgt board 0.8 ;{!CP} {/SC} {MM} ;select units with a memory mgt board 0.8 ; ; File: P.PROM.TEXT ; Date: 18-Jan-84 ; By: L. Franklin changes by K. Ball ; ; +-----+----------------+ ; Stag PROM checksums: | | | ; | H | | ; | | | ; +-----+----------------+ ; | | | ; | L | | ; | | | ; +-----+----------------+ page include 'P.PROM.EQ' ;PROM equates page ;vectors ; Corvus CONCEPT Workstation PROM address vectors ; org ROMbase ; data.l 0 ;(10000) initial stack pointer data.l setup ;(10004) start of PROM code data.l $FFFFFFFF ;(10008) unique workstation ID data.b PROMvers ;(1000C) PROM version number data.b PROMlevl ;(1000D) PROM level number data.w $FFFF ;(1000E) PROM checksum ; data.w jumpto ;(10010) jump to OMNINET disk boot subr data.l SBomni ;(10012) OMNINET disk boot subr pointer data.l ODblkIO ;(10016) OMNINET disk blk i/o subr pointer data.l ODdskIO ;(1001A) OMNINET disk i/o subr pointer data.w 0 ; ; data.w jumpto ;(10020) jump to local disk boot subr data.l SBlocal ;(10022) local disk boot subr pointer data.l LDblkIO ;(10026) local disk blk i/o subr pointer data.l LDdskIO ;(1002A) local disk i/o subr pointer data.w 0 ; ; data.w jumpto ;(10030) jump to floppy disk boot subr data.l SBflpy ;(10032) floppy boot subr pointer data.l FDblkIO ;{!CC};(10036) SSSD floppy blk i/o subr 0.8 data.l FDsecIO ;{!CC};(1003A) SSSD floppy sector i/o subr 0.8 data.l FDinit ;{!CC};(1003E) SSSD floppy initialization 0.8 data.l 0,0,0 ;{!MM};(10036) ....unused 0.8 ; ---- data.l ADblkIO ;(10042) Apple floppy blk i/o subr 0.7 ; ---- data.l ADsecIO ;(10046) Apple floppy sector i/o subr 0.7 ; ---- data.l ADinit ;(1004A) Apple floppy initialization 0.7 data.l FBblkIO ;(10042) DSDD floppy blk i/o subr 0.7 data.l FBsctIO ;(10046) DSDD floppy sector i/o subr 0.7 data.l FBinit ;(1004A) DSDD floppy initialization 0.7 data.w 0 ; data.l KBinit ;(10050) initialize (reset) keyboard driver data.l KBgetch ;(10054) get a keyboard character data.l 0 ;(10058) data.l 0 ;(1005C) data.l DSinit ;(10060) initialize display driver data.l DSputch ;(10064) display a character data.l DSputst ;(10068) display a string data.l DScvtuc ;(1006C) convert character to upper case data.l INTslot ;(10070) level 1 interrupt vector (SLOTS) data.l INTdc1 ;(10074) level 2 interrupt vector (DC1) data.l INTomni ;(10078) level 3 interrupt vector (OMNINET) data.l INTdc0 ;(1007C) level 4 interrupt vector (DC0) data.l INTtimr ;(10080) level 5 interrupt vector (TIMER) data.l INTkybd ;(10084) level 6 interrupt vector (KYDB) data.l INTlvl7 ;(10088) level 7 interrupt vector data.l 0 ;(1008C) list 0 msgcpy data.b 'Copyright ' ;Corvus CONCEPT data.b '1984 Corvus ' ; PROM data.b 'Systems, Inc.' ; copyright notice data.b 0 ; list 1 page ;Setup ; Initialize Corvus CONCEPT hardware ; Setup move.w #$2700,sr ;set priority to 7, nmi interrupt only lea CPistack.w, SP ;set system stack pointer 0.8 ; ; delay for possible Apple floppy reset *kb 8/23/82* 0.5 ; 0.5 MOVEQ #-1, D0 ;Must wait at least 1 second 0.8 Setup1 DBRA D0,Setup1 ;* 0.5 Setup2 DBRA D0,Setup2 ;* 0.5 Setup3 DBRA D0,Setup3 ;* 0.5 Setup4 DBRA D0,Setup4 ;{!VN};... and longer for Venus 0.8 Setup5 DBRA D0,Setup5 ;{!VN};* 0.8 Setup6 DBRA D0,Setup6 ;{!VN};* 0.8 Setup7 DBRA D0,Setup7 ;{!VN};* 0.8 Setup8 DBRA D0,Setup8 ;{!VN};* 0.8 Setup9 DBRA D0,Setup9 ;{!VN};* 0.8 ; move.l #VIAbase,a6 ;get pointer to VIA I/O locations ;{!VN} ---------------------------------------------------------------- 0.8 ;{!VN} 0.8 ;{!VN} Memory map of Venus used as a Concept is identical to Concept 0.8 ;{!VN} except for the following: 0.8 ;{!VN} 0.8 ;{!VN} There is no zero detect to make the first 8 bytes of ROM and 0.8 ;{!VN} the rest of static RAM. 0.8 ;{!VN} 0.8 ;{!VN} Instead, when ALTMAP = 0 the map area 0-0FFFF is ROM0 0.8 ;{!VN} when ALTMAP = 1 the map area 0-0FFFF is SRAM 0.8 ;{!VN} 0.8 ;{!VN} ALTMAP is set to 1 before any writes to static RAM. 0.8 ;{!VN} 0.8 ;{!VN} ALTMAP can only be reset to zero by turning power off. 0.8 ;{!VN} 0.8 ;{!VN} ---------------------------------------------------------------- 0.8 ;{!VN} 0.8 move.b #$40,$81(a6) ;{!VN} set ALTMAP to 1 0.8 ;{!VN} 0.8 clr.w CPextcrt.w ;reset system flags (CPextcrt, CPsysst) move.b #$17,$07(a6) ;kybd control, 600 baud, 8 bit word move.b #$0B,$05(a6) ;kybd command, no parity, no interrupts move.b #$3E,$27(a6) ;dcom0 control, 9600 baud, 7 bit word move.b #$AB,$25(a6) ;dcom0 cmd mark parity, xmit & rcv w/o IRQ move.b #$3E,$47(a6) ;dcom1 control, 9600 baud, 7 bit word move.b #$AB,$45(a6) ;dcom1 command clr.b $7F(a6) ;VIA port A -- ok to read port before 0.8 clr.b $61(a6) ;VIA port B -- write byte of zero 0.8 move.b #$80,$67(a6) ;VIA data direction A move.b #$37,$65(a6) ;VIA data direction B move.b #$10,$77(a6) ;free run shift register, counter move.b #$0F,$75(a6) ;symmetrical wave shape move.b #$A0,$71(a6) ;fairly low initial frequency tst.b $C1(a6) ;turn off possible OMNINET interrupt move.b $01(a6),d0 ;clear keyboard data buffer move.b $21(a6),d0 ;clear dcom0 data buffer move.b $41(a6),d0 ;clear dcom1 data buffer include 'P.PROM.SP' ;{!UC} set seg/pag registers 0.8 page ;SetMB ; ; Check Corvus CONCEPT hardware (test 1) ; ; Verify ports making no data accesses ; SetupCk cmpi.b #$3E,$27(a6) ;dcom0 control 0.8 bne.s CHerr ; cmpi.b #$AB,$25(a6) ;dcom0 command bne.s CHerr ; cmpi.b #$3E,$47(a6) ;dcom1 control bne.s CHerr ; cmpi.b #$AB,$45(a6) ;dcom1 command bne.s CHerr ; cmpi.b #$17,$07(a6) ;kybd control bne.s CHerr ; cmpi.b #$0B,$05(a6) ;kybd command bne.s CHerr ; cmpi.b #$80,$67(a6) ;VIA data direction A bne.s CHerr ; cmpi.b #$37,$65(a6) ;VIA data direction B beq.s CHend ; CHerr moveq #-1,d0 ;short delay before error tone 0.8 CHerr1 dbra d0,CHerr1 ;* bset #0,CPsysst.w ;set test 1 failed flag bsr Flash ;* CHend MOVEQ #$41, D0 ;{!DB} BSR DSPUTCH ;{!DB} moveq #-1,d0 ;{!DS};short delay before clearing screen 0.8 CHend1 dbra d0,CHend1 ;{!DS} bsr SBprom2 ;{!DS};is this a boot to PROM? 0.7 beq.s CHend2 ;{!DS};yes, do not clear screen 0.7 move.l #DSPbase,a0 ;{!DS};get pointer to start of display screen move.l #DSPend,a1 ;{!DS};get pointer to end of display screen bsr ZeroRam ;{!DS};clear display screen CHend2 move.b #$FF,$75(a6) ;turn off initial tone 0.7 ; SetMB -- Initialize MACSBUG RAM ; SetMB lea RAMmxbug.w,a0 ;get pointer to start of MACSBUG RAM 0.8 lea RAMwksta-4.w,a1 ;get pointer to end of MACSBUG RAM 0.8 bsr ZeroRam ;zero MACSBUG RAM 0.7 bsr SBprom1 ;is debug PROM present? 0.7 bne.s RomTst1 ;no, go on 0.7 jsr (a1) ;initialize MACSBUG 0.8 MOVEQ #$42, D0 ;{!DB} BSR DSPUTCH ;{!DB} lea SPbusEr,a1 ;{!UC}bus error processing address 0.8 move.l a1, BusErrV.W;{!UC}set vector 0.8 bsr SBprom2 ;is this a boot to PROM? 0.7 beq MemClr1 ;yes, bypass PROM and RAM checks 0.7 page ;RomTst1, RamTst1, RamTst2, MemTest ; ; RomTst1 -- Check Corvus CONCEPT PROM (test 2) ; RomTst1 move.l #CPcksum,a0 ;get pointer to start of PROM MOVEQ #$43, D0 ;{!DB} BSR DSPUTCH ;{!DB} move.l #ROMend,a1 ;get pointer to end of PROM bsr RomTst ;check PROM beq.s RamTst1 ;PROM ok, go on bset #1,CPsysst.w ;set test 2 failed flag bsr Flash ;* ; ; RamTst1 -- Check Corvus CONCEPT static RAM (test 3) ; RamTst1 lea RAMwksta.w,a0 ;get pointer to start of RAM 0.8 bsr WalkBit ;is RAM valid? bne.s RT1err ;no, report error MOVEQ #$44, D0 ;{!DB} BSR DSPUTCH ;{!DB} lea CPstack.w,a1 ;get pointer to end of RAM 0.8 ; (leave room for stack) bsr March ;is RAM valid? beq.s RamTst2 ;yes, go on ; RT1err bset #2,CPsysst.w ;set test 3 failed flag bsr Flash ;* ; ; RamTst2 -- Check Corvus CONCEPT dynamic RAM (test 4) ; RamTst2 MOVEQ #$45, D0 ;{!DB} BSR DSPUTCH ;{!DB} btst #7, CPsysst.w ;{!UC};if seg or page reg error 0.8 bon.s MemClr1 ;{!UC};then don't check or clear dram 0.8 move.l #USRbase,a0 ;get pointer to start of RAM bsr WalkBit ;is RAM valid? bne.s RT2err ;no, report error bsr RamSize ;get dynamic RAM size (a1 = RAM size) bsr March ;is RAM valid? beq.s MemTest ;yes, go on ; RT2err bset #3,CPsysst.w ;set test 4 failed flag bsr Flash ;* ; ; MemTest -- Check Corvus CONCEPT dynamic RAM (test 5) ; MemTest bsr IncTest ;test user dynamic RAM beq.s MemClr ;no error, clear memory bset #4,CPsysst.w ;set test 5 failed flag bsr Flash ;* page ;MemClr, SetIntV, SlotID ; MemClr -- Clear memory ; MemClr move.l #DSPbase,a0 ;{!CV};get pointer to start of RAM 0.7 MemClr move.l #USRbase,a0 ;{!UC};get pointer to start of RAM 0.8 MOVEQ #$46, D0 ;{!DB} BSR DSPUTCH ;{!DB} bsr RamSize ;get dynamic RAM size (a1 = RAM size) 0.7 bsr ZeroRam ;zero RAM 0.7 ; 0.7 MemClr1 lea RAMwksta.w,a0 ;get pointer to start of RAM 0.8 lea CPstack-2.w,a1 ;get pointer to end of RAM 0.8 ; (leave room for stack) 0.7 MOVEQ #$47, D0 ;{!DB} BSR DSPUTCH ;{!DB} bsr ZeroRam ;zero static RAM 0.7 ; SetIntV -- Set up interrupt vectors ; SetIntV move.l #CPivec1,a0 ;get pointer to interrupt vector table lea IVlvl1.w,a1 ;get pointer to interrupt vectors 0.8 moveq #6,d0 ;get number of vectors to move SUI1 move.l (a0)+,(a1)+ ;move pointers to interrupt vectors dbra d0,SUI1 ;* ;{!DS} bsr KBinit ;{!DS};initialize keyboard bsr DSinit ;{!DS};initialize display MOVEQ #$0D, D0 ;{!DB} BSR DSPUTCH ;{!DB} ; lea msg1,a0 ;mesg - "Corvus CONCEPT Initialization" bsr DSputst ;output message lea msgcpy,a0 ;mesg - copyright notice bsr DSputst ;output message lea msg2,a0 ;mesg - carriage returns bsr DSputst ;output message ; SlotID -- Examine slots for known devices ; SlotID lea CPsl1typ.w,a5 ;get pointer to slot types table 0.8 movea.l #IOPprom,a0 ;get pointer to slot 1 interface PROM 0.7 moveq #1,d6 ;get index for slot 1 bsr LDsync ;{!VN};sync with local disk 0.8 blt SlotID8 ;{!VN};set no device if no disk 0.8 move.b #DTlocl,-1(a5,d6);{!VN};set device type 0.8 bra SlotID9 ;{!VN};check next slot 0.8 SlotID1 movep.l 01(a0),d1 ;get interface prom code (ID) movep.l 09(a0),d2 ;get interface prom code (ID) tst.b IOPbase+$9FFF.L ;disable interface RAM 0.7 page ;SlotID (continued) move.b #DTlocl,-1(a5,d6);set possible device type 0.7 cmp.l #$A920A900,d1 ;is this a local disk? bne.s SlotID3 ;no, check next device cmp.l #$A903A93C,d2 ;is this a local disk? bne.s SlotID3 ;no, check next device bsr LDsync ;sync with local disk bge.s SlotID9 ;check next slot if disk responded 0.7 bset #5,CPsysst.w ;set test 6 failed flag 0.7 bsr Flash ;* 0.7 bra.s SlotID8 ;bypass slot if disk did not respond 0.7 ; 0.7 SlotID3 move.b #DTa5,-1(a5,d6) ;set possible device type 0.7 cmp.l #$A220A000,d1 ;is this an Apple floppy? bne.s SlotID4 ;no, check next device cmp.l #$A203863C,d2 ;* beq.s SlotID9 ;check next slot (dev type set) 0.7 ; SlotID4 cmp.l #'CORV',d1 ;is this a Corvus floppy? bne.s SlotID8 ;no, check next slot 0.7 ; 0.7 move.b #DTc8,-1(a5,d6) ;set possible device type 0.7 cmp.l #'US01',d2 ;is this a Corvus SSSD floppy? 0.7 bne.s SlotID5 ;no, check for another floppy type 0.7 bsr SlotAdr ;compute FDC register base pointer 0.7 move.b #$20,1(a1) ;turn off floppy motor 0.7 bra.s SlotID9 ;check next slot (dev type set) 0.7 ; 0.7 SlotID5 move.b #DTf8,-1(a5,d6) ;set possible device type 0.7 cmp.l #'US02',d2 ;is this a Corvus DSDD floppy? 0.7 bne.s SlotID8 ;no, set no device in slot 0.7 bsr SlotAdr ;compute FDC register base pointer 0.7 move.b #$08,9(a1) ;turn off floppy motor 0.7 btst #7,9(a1) ;is this an 8" floppy? 0.7 bon.s SlotID9 ;yes, check next slot (dev type set) 0.7 move.b #DTf5,-1(a5,d6) ;set device type 0.7 bra.s SlotID9 ;check next slot (dev type set) 0.7 ; 0.7 SlotID8 clr.b -1(a5,d6) ;set no device in slot 0.7 ; SlotID9 adda.w #$200,a0 ;update interface PROM pointer addq #1,d6 ;update slot number cmp.w #4,d6 ;have we looked at all slots? ble SlotID1 ;no, check next slot MOVEQ #'H',D0 ;{!DB} BSR DSPUTCH ;{!DB} ;;;;;;; BRA RPTSTAT ;{!DB}skip omninet stuff page ;SlotID (continued) btst #7, CPsysst.w ;{!UC};if seg or page reg error then 0.8 bon.s RptStat ;{!UC};can't do omninet - dram problem 0.8 moveq #InitOp,d0 ;get OMNINET Transporter number bsr ODcomnd ;* MOVEQ #'I', D0 ;{!DB} BSR DSPUTCH ;{!DB}DSPUTCH saves D0-D7 & A0-A6 move.b d7,CPtprnbr.w ;save OMNINET Transporter number 0.7 blt.s SlotIDb ;if error, go on 0.7 ; bsr ODpeek ;check if transporter is a PTom 0.8 cmpi.b #$63, D7 ;version less than 64? 0.8 bls.s RptStat ;yes, is PTom - ignore it 0.8 moveq #EchoOp,d0 ;is OMNINET Transporter number in use? move.b CPtprnbr.w,d1 ;get station's transporter host number 0.8 bsr ODcomnd ;* MOVEQ #'J', D0 ;{!DB} BSR DSPUTCH ;{!DB} cmpi.b #Echoed,d7 ;* bne.s SlotIDa ;no, go on bset #6,CPsysst.w ;set test 7 failed flag bsr Flash ;* bra.s SlotIDb ;bypass disk server broadcast SlotIDa bsr ODbroad ;send broadcast message to disk srvr 0.7 ;* in order to get disk server 0.7 ;* Transporter number 0.7 MOVEQ #'K', D0 ;{!DB} BSR DSPUTCH ;{!DB} SlotIDb move.b d7,CPbtsrvr.w ;save boot server number blt.s RptStat ;if error, go on move.b #DTomni,4(a5) ;set device type page ;RptStat ; ; RptStat -- Report results of system initialization tests ; RptStat moveq #0,d1 ;initialize test number MOVEQ #$0D, D0 ;{!DB} BSR DSPUTCH ;{!DB} tst.b CPsysst.w ;any system errors? bne.s RptSt1 ;yes, report them lea msg32,a0 ;mesg - All system tests passed bsr DSputst ;output message ; ---- bra.s RptSt8 ;output carriage returns ; RptSt1 btst d1,CPsysst.w ;did current test pass? boff.s RptSt2 ;yes, go on lea msg30,a0 ;mesg - System test bsr DSputst ;output message move.b d1,d0 ;get test number addi.b #$31,d0 ;* bsr DSputch ;output test number lea msg31,a0 ;mesg - failed bsr DSputst ;output message ; RptSt2 addq.w #1,d1 ;increment test number cmp.w #7,d1 ;finished with all tests? bls.s RptSt1 ;no, process next test 0.8 ; RptSt8 lea msg2,a0 ;output carriage returns bsr DSputst ;* move.b #$0F,$75(a6) ;symmetrical wave shape move.b #$A0,$71(a6) ;output a low pitch tone moveq #-1,d0 ;short delay 0.8 RptSt9 dbra d0,RptSt9 ;leaves d0 as $FFFFFFFF move.b d0,$75(a6) ;turn off tone 0.8 page ;SelBoot ; ; SelBoot -- Select boot type ; SelBoot move.b IObootsw.L,d0 ;get boot selection switches andi.w #$C0,d0 ;* beq SBuser ;00 - user select cmpi.b #$40,d0 ; beq.s SBlocal ;01 - local disk boot cmpi.b #$80,d0 ; beq.s SBomni ;02 - OMNINET disk boot bsr SBprom1 ;is debug PROM present? 0.7 bne.s SBflpy ;03 - no, floppy disk boot 0.8 move.b #1,CPextcrt.w ;03 - yes, debug (or other) PROM 0.7 ; SBdebug bsr SBprom1 ;is debug PROM present? 0.7 bne.s SBuser ;no, ask user for boot device lea msg4,a0 ;mesg - MACSBUG I/O on DataComm 0 0.6 bsr DSputst ;output message movea.l MXBentry.L,a0 ;*kb yes, go to debugger 0.5 jmp (a0) ;*kb 0.5 ; SBomni lea msg11,a0 ;mesg - "OMNINET disk boot" bsr SBmsg ;output message bsr Oboot ;load OS boot code bra.s SBboot ;transfer control to boot code ; SBlocal lea msg12,a0 ;mesg - "Local disk boot" bsr SBmsg ;output message bsr Lboot ;load OS boot code bra.s SBboot ;transfer control to boot code ; SBflpy lea msg13,a0 ;mesg - "Floppy disk boot" bsr.s SBmsg ;output message movea.l #CPsl1typ,a1 ;get pointer to slot 1 type moveq #1,d0 ;get initial slot number SBflpy1 move.b -1(a1,d0),d1 ;get device type cmpi.b #DTc8,d1 ;{!CC};is this a Corvus SSSD floppy disk? 0.8 beq.s SBflpy2 ;{!CC};yes, use it for booting 0.8 ; ---- cmpi.b #DTa5,d1 ;is this an Apple floppy disk? 0.7 ; ---- beq.s SBflpy3 ;yes, use it for booting 0.7 cmpi.b #DTf8,d1 ;is this a Corvus DSDD 8" floppy disk? 0.7 beq.s SBflpy4 ;yes, use it for booting 0.7 cmpi.b #DTf5,d1 ;is this a Corvus DSDD 5" floppy disk? 0.7 beq.s SBflpy4 ;yes, use it for booting 0.7 addq #1,d0 ;update slot number cmp.w #4,d0 ;have we looked at all slots? ble.s SBflpy1 ;no, check next slot bra GoToBt1 ;output error message ; SBflpy2 bsr Fboot ;{!CC};load OS boot code 0.8 bra.s SBboot ;{!CC};transfer control to boot code 0.8 ; ;Bflpy3 bsr Aboot ;load OS boot code 0.7 ; ---- bra.s SBboot ;transfer control to boot code 0.7 page ;SBuser, SBmsg, SBprom1, SBprom2 SBflpy4 bsr FBboot ;load OS boot code 0.7 SBboot bra GoToBt ;transfer control to boot code 0.7 ; SBuser bsr.s SBprom2 ;boot to debug PROM? 0.7 beq SBdebug ;yes 0.7 lea msg10,a0 ;mesg - "Select boot device" bsr DSputst ;output message bsr KBgetch ;get reply bsr DScvtUC ;convert character to upper case move.b d0,-(sp) ;save reply bsr DSputch ;echo reply moveq #DSCcr,d0 ;output carriage return bsr DSputch ;* move.b (sp)+,d0 ;restore reply cmpi.b #'F',d0 ;Corvus floppy boot? beq.s SBflpy ;yes, do it cmpi.b #'D',d0 ;debug? beq SBdebug ;yes, do it cmpi.b #'L',d0 ;local disk boot? beq SBlocal ;yes, do it cmpi.b #'O',d0 ;OMNINET disk boot? beq SBomni ;yes, do it bra Setup ;no, start over again ; ; SBmsg -- Output message ; SBmsg bsr DSputst ;output message lea msg19,a0 ;mesg - "disk boot" bsr DSputst ;output message rts ;return ; ; SBprom1 -- Is debug PROM present? (EQ - yes, NE - no) ; SBprom1 lea MXBinit.L,a0 ;is debug PROM present? 0.7 lea MXBbase+$C.L,a1 ;* 0.7 cmpa.l (a0),a1 ;* 0.7 rts ;return 0.7 ; ; SBprom2 -- Boot to debug PROM? (EQ - yes, NE - no) ; SBprom2 movem.l a0-a1/d0,-(sp) ;save registers 0.7 bsr.s SBprom1 ;is debug PROM present? 0.7 bne.s SBprom9 ;no, return 0.7 move.b IObootsw.L,d0 ;get boot selection switches 0.7 andi.w #$C0,d0 ;* 0.7 cmpi.w #$C0,d0 ;is this a boot to PROM? 0.7 SBprom9 movem.l (sp)+,a0-a1/d0 ;restore registers 0.7 rts ;return 0.7 page ;GoToBt ; ; GoToBt -- Transfer control to boot code ; ; Enter: A0.L = Boot code entry point pointer ; ; Values passed in registers to the boot are: ; ; +---------------+---------------+---------------+---------------+ ; D0 | low user RAM address | ; +---------------+---------------+---------------+---------------+ ; D1 | high user RAM address | ; +---------------+---------------+---------------+---------------+ ; D2 | low user RAM address (same as D0) | ; +---------------+---------------+---------------+---------------+ ; D3 | high user RAM address (same as D1) | ; +---------------+---------------+---------------+---------------+ ; D4 | 0 | 0 | boot slot | boot server | ; +---------------+---------------+---------------+---------------+ ; D5 | 0 | ; +---------------+---------------+---------------+---------------+ ; D6 | 0 | ; +---------------+---------------+---------------+---------------+ ; D7 | 0 | ; +---------------+---------------+---------------+---------------+ ; GoToBt bge.s GoToBt2 ;go on if no boot load error ; GoToBt1 lea msg3,a0 ;mesg - "Boot error" bsr DSputst ;output message bra SBuser ;select boot device again ; GoToBt2 bsr RamSize ;get dynamic RAM size (a1 = RAM size) 0.6 cmpa.l #MEMprom,a1 ;are we in PROM? 0.7 bne.s GoToBt3 ;yes, go on 0.6 lea CPbtslot.w,a1 ;set RAM size to protect code 0.6 ; 0.6 GoToBt3 move.l #USRbase,d0 ;D0 - low user RAM address 0.6 move.l a1,d1 ;D1 - high user RAM address move.l d0,d2 ;D2 - low user RAM address move.l d1,d3 ;D3 - high user RAM address clr.l d4 ;D4 - 0 move.b CPbtslot.w,d4 ;D4 - boot slot lsl.w #8,d4 ; move.b CPbtsrvr.w,d4 ;D4 - boot slot/boot server clr.l d5 ;D5 - 0 clr.l d6 ;D6 - 0 clr.l d7 ;D7 - 0 jmp (a0) ;enter boot code page ;RomTst ; ; RomTst -- Compute checksum for PROM ; (PROM checksum is included in address range) ; ; Enter: A0.L = PROM start pointer ; A1.L = PROM end pointer ; ; Exit: EQ = PROM checksum valid ; NE = PROM checksum error ; RomTst move.l a0,a2 ;get starting address clr.w d0 ; RT1 move.w (a2)+,d1 ; eor.w d1,d0 ; cmpa.l a1,a2 ; blt.s RT1 ; cmp.w #$FFFF,d0 ; rts ;return ; ; WalkBit -- Walking ones and zeros ; ; Enter: A0.L = RAM start pointer ; WalkBit move.l a0,a2 ;get starting address move.l a0,a1 ;get ending address adda.w #$10,a1 ;* 0.8 WB1 moveq #-2,d0 ;puts $FFFE in low word 0.8 WB2 move.w d0,(a2) ; cmp.w (a2),d0 ; bne.s WBerr ; rol #1,d0 ; bcs.s WB2 ; ; moveq #1,d0 ; 0.8 WB3 move.w d0,(a2) ; cmp.w (a2),d0 ; bne.s WBerr ; asl #1,d0 ; bcc.s WB3 ; ; addq.l #2,a2 ; 0.8 cmpa.l a1,a2 ; blt.s WB1 ; ; WBerr rts ;return page ;March ; ; March -- ; ; Enter: A0.L = RAM start pointer ; A1.L = RAM end pointer ; March move.l a0,a2 ; clr.l d0 ; ; MR1 move.w d0,(a2)+ ; cmpa.l a1,a2 ; bne.s MR1 ; ; move.w d0,d2 ; not.w d2 ; MR2 move.w -(a2),d1 ; cmp.w d0,d1 ; bne.s MRerr ; move.w d2,(a2) ; cmpa.l a0,a2 ; bne.s MR2 ; ; move.w d2,d0 ; not.w d2 ; MR3 move.w (a2),d1 ; cmp.w d0,d1 ; bne.s MRerr ; move.w d2,(a2)+ ; cmpa.l a1,a2 ; bne.s MR3 ; ; MRerr rts ;return page ;IncTest, RamSize, ZeroRam ; ; IncTest -- ; ; Enter: A0.L = RAM start pointer ; A1.L = RAM end pointer ; IncTest move.l a0,a2 ; move.w #$101,d1 ; ; IT01 move.w d1,(a2)+ ; rol.w #1,d1 ; cmpa.l a1,a2 ; blt.s IT01 ; ; move.l a0,a2 ; move.w #$101,d1 ; ; IT02 cmp.w (a2)+,d1 ; bne.s IT99 ; rol.w #1,d1 ; cmpa.l a1,a2 ; blt.s IT02 ; ; IT99 rts ;return ; ; RamSize -- Get end of user RAM pointer ; ; Exit: A1.L = RAM end pointer ; RamSize move.l #MEMprom,a1 ;are we in PROM? 0.7 cmpi.l #ROMend,(sp) ;* bgt.s RamSiz9 ;no, return move.l #MEM512k,MEM512k.L ;{!CV};get actual RAM size 0.7 move.l #MEM256k,MEM256k.L ;{!CV} 0.7 move.l MEM512k.L,a1 ;{!CV} 0.7 lea MEM512k.L, a1 ;{!UC} only has 512 kbytes 0.8 RamSiz9 rts ;return ; ; ZeroRam -- Move 0 to RAM subroutine ; ; Enter: A0.L = RAM start pointer ; A1.L = RAM end pointer ; ZeroRam clr.l (A0)+ ; cmpa.l a1,a0 ; ble.s ZeroRam ; rts ;return page ;Flash ; ; Flash -- Flash display screen subroutine ; Flash movem.l a0-a1/a6/d0-d1,-(sp);save registers 0.8 moveq #3, d1 ;{!UC};make sound 4 times 0.8 FL0 move.l #VIAbase,a6 ;get pointer to VIA I/O locations move.b #$0F,$75(a6) ;symmetrical wave shape move.b #$40,$71(a6) ;output a high pitch error tone bsr SBprom2 ;{!CV};is this a boot to PROM? 0.7 beq.s FL4 ;{!CV};yes, do not flash screen 0.7 move.l #DSPend-$30,a1 ;{!CV};get ptr to end of display screen 0.7 ; FL1 move.l #DSPbase,a0 ;{!CV};get pointer to start of 0.8 FL2 not.w (a0)+ ;{!CV}; display screen 0.8 cmpa.l a1,a0 ;{!CV} 0.8 blt.s FL2 ;{!CV} 0.8 move.l #DSPbase,a0 ;{!CV};get pointer to start of 0.8 FL3 not.w (a0)+ ;{!CV}; display screen 0.8 cmpa.l a1,a0 ;{!CV} 0.8 blt.s FL3 ;{!CV} 0.8 ;{!CV} 0.8 FL4 moveq #-1,d0 ;short delay 0.8 FL5 dbra d0,FL5 ;* move.b #$FF,$75(a6) ;turn off tone moveq #-1,d0 ;short delay 0.8 FL6 dbra d0,FL6 ;* dbra d1, FL0 ;{!UC} make sound again if no display 0.8 movem.l (sp)+,a0-a1/a6/d0-d1;restore registers 0.8 rts ;return page ;INT... ; ; INTlvl7 -- process level 7 interrupt (ignore interrupt) ; INTlvl7 rte ;return from interrupt ; ; INTkybd -- process KEYBOARD interrupt (ignore interrupt) ; INTkybd ori.b #$02,IOkybd.l ;lvl 6 (KYBD) - turn off recv int 0.7 andi.b #$F3,IOkybd.l ;lvl 6 (KYBD) - turn off xmit int 0.7 rte ;return from interrupt ; ; INTtimr -- process TIMER interrupt (ignore interrupt) ; INTtimr move.b #$7F,IOtimr.l ;lvl 5 (TIMER) - turn off VIA int 0.7 rte ;return from interrupt ; ; INTdc0 -- process DATACOMM0 interrupt (ignore interrupt) ; INTdc0 ori.b #$02,IOdc0.l ;lvl 4 (DC0) - turn off recv int 0.7 andi.b #$F3,IOdc0.l ;lvl 4 (DC0) - turn off xmit int 0.7 rte ;return from interrupt ; ; INTomni -- process OMNINET interrupt (ignore interrupt) ; INTomni tst.b IOomni.l ;lvl 3 (OMNINET) - reset interrupt 0.7 rte ;return from interrupt ; INTdc1 -- process DATACOMM1 interrupt (ignore interrupt) ; INTdc1 ori.b #$02,IOdc1.l ;lvl 2 (DC1) - turn off recv int 0.7 andi.b #$F3,IOdc1.l ;lvl 2 (DC1) - turn off xmit int 0.7 rte ;return from interrupt ; INTslot -- process SLOT interrupt (ignore interrupt) ; INTslot movem.l D0/A0,-(SP) ;save registers lea IOslot.l,a0 ;get pointer to port A ORA 0.7 move.b (A0),D0 ;read port A w/o handshake bchg #7,D0 ;toggle IOX move.b D0,(A0) ;write new IOX movem.l (SP)+,D0/A0 ;restore registers rte ;return from interrupt page ;SlotAdr, msg... ; ; SlotAdr -- compute slot address given slot number ; ; Enter: D6.B - Slot number ; ; Exit: A1.L - I/O port address ; SlotAdr move.l d6,-(sp) ;save register ext.w d6 ;compute disk port address for slot lsl.w #5,d6 ;* move.l #IOPbase,a1 ;* 0.7 adda.w d6,a1 ;* move.l (sp)+,d6 ;restore register rts ;return list 0 msg1 data.b DSCcr,DSCcr data.b 'Corvus CONCEPT Initialization (' ;{!CC} 0.8 data.b 'Corvus Concept Plus Initialization (' ;{!CP} 0.8 data.b 'Corvus Uniplex Initialization (' ;{!UP} 0.8 data.b 'Corvus Venus Initialization (' ;{!VN} 0.8 data.b PROMvers+$30,'.',PROMlevl+$30,')' msg2 data.b DSCcr,DSCcr,0 msg3 data.b 'Boot error ....',DSCcr,DSCcr,0 msg4 data.b DSCcr,DSCcr,'MACSBUG I/O on DataComm 0',DSCcr,0 msg10 data.b 'Select boot device (D,F,L,O): ',0 msg11 data.b 'OMNINET',0 msg12 data.b 'Local',0 msg13 data.b 'Floppy',0 msg19 data.b ' disk boot',DSCcr,0 msg30 data.b 'System test ',0 msg31 data.b ' failed',DSCcr,0 msg32 data.b 'All system tests passed',DSCcr,0 data.b 0 page ;p.prom.kb ; include 'P.PROM.KB' ;keyboard driver page ;p.prom.ds ; include 'P.PROM.DS' ;display driver page ;p.prom.ld ; list 1 include 'P.PROM.LD' ;local disk driver page ;p.prom.od ; include 'P.PROM.OD' ;OMNINET disk driver list 0 page ;p.prom.fd ;{!CC}; 0.8 include 'P.PROM.FD' ;{!CC};Corvus floppy driver 0.8 ; ---- page ;p.prom.ad ; 0.7 ; ---- include 'P.PROM.AD' ;Apple floppy driver 0.7 page ;p.prom.fb ; 0.7 include 'P.PROM.FE' ;Rev B floppy driver equates 0.7 include 'P.PROM.FB' ;Rev B floppy driver 0.7 page list 1 PromLength EQU % ;bytes of code end setup