# define RP6CYL 815 /* no. RP06 cylinders/pack */ # define RP6TRK 19 /* no. tracks/cyl */ # define RP6SEC 22 /* no. sectors/track */ # define RP6ST (RP6SEC*RP6TRK) /* no. sectors/cyl */ # define MAXSEC (RP6CYL*RP6TRK*RP6SEC) /* sectors/pack */ # define M0 0x20010000 /* phys addr MBA 0 */ # define M0_cr (M0+4) /* MBA 0 control reg addr */ # define M0_sr (M0+8) /* mba 0 status reg */ # define M0_map (M0+0x800) /* start MBA 0 map reg's */ # define M0_var (M0+0xc) /* MBA 0 virt addr reg */ # define M0_bc (M0+0x10) /* MBA 0 byte count reg */ # define MBAinit 01 /* MBA init bit */ /* */ # define RP (M0+0x400) /* base for RP06 reg's, drive 0 */ /* */ # define RP_cr 0 /* RP06 control reg offset, longword */ # define RP_sr 1 /* RP06 status reg offset */ # define RP_er1 02 /* RP error reg 1 */ # define RP_stk 5 /* RP06 sector/track reg offset */ # define RP_er2 010 /* RP error reg 2 */ # define RP_off 011 /* RP offset reg */ # define RP_cyl 012 /* RP06 cylinder reg offset */ # define RP_er3 015 /* RP error reg 3 */ /* */ # define RP_GO 1 /* go bit */ # define RP_RED 070 /* RP06 read function code */ # define RP_DC 010 /* drive clear function code */ # define RP_FMT 0x1000 /* format bit for offset reg */ # define RP_RIP 020 /* Read-in Preset RP06 function code */ # define RP_DRY 0200 /* drive ready, status reg */ # define RP_ERR 040000 /* composite error, status reg */ # define RP_MOL 0x1000 /* medium-online bit in status reg */ /* */ # define RXCS 32 /* receiver control/staus */ # define RXDB 33 /* receiver data */ # define TXCS 34 /* transmitter control/status */ # define TXDB 35 /* transmitter data */ # define RXCS_DONE 0x80 /* receiver done */ # define TXCS_RDY 0x80 /* transmitter ready */ /* */ # define BLKSIZ 512 # define MAXUNI 1 # define NL 012 # define CR 015 /* */ char input[BLKSIZ] ; /* disc input buffer */ struct { int reg , reg2 , reg3 ; } ; int count , dskoff , dunit , error , numbyt ; unsigned short bytoff ; int *RPptr ; /* ptr to start of RP reg's for desired drive */ main() { /* * Stand-alone program to dump RP06 disk to VAX LSI console * printer in hex format. * User specifies disk unit, start disk block and no. of blocks. */ int getcon() , putstr() , a2l() , l2a() ; putlin("ddump : disk-to-console hex dump") ; putnl() ; dun : putstr("disk unit : "); getcon(input) ; dunit = a2l(input) ; if ((dunit > MAXUNI) || (dunit < 0)) goto dun ; doff : putstr("start disk block : ") ; if (getcon(input)) goto fini ; dskoff = a2l(input) ; if (dskoff < 0) goto fini ; if (dskoff > MAXSEC-1) goto doff ; gknt : putstr("no. blocks : ") ; if (getcon(input)) goto fini ; count = a2l(input) ; if (count < 0) goto gknt ; if (count == 0) count = 1 ; gbyt : putstr("no. bytes : ") ; if (getcon(input)) goto fini ; numbyt = a2l(input) ; if ((numbyt < 0) || (numbyt > BLKSIZ)) goto gbyt ; if (numbyt == 0) numbyt = BLKSIZ ; error = 0 ; if (init()) goto dun ; putlin(" HI < - - LO") ; nullcon(3) ; putnl() ; while ((error == 0) && (count--)) { if (dread()) { putlin("disk i/o error") ; ioerr : error++ ; continue ; } if (prblk()) { putlin("console i/o error") ; goto ioerr ; } putnl() ; putnl() ; dskoff++ ; /* next sector */ } goto doff ; fini : return(0) ; } /* */ putstr(csp) register char *csp ; { if (putcon(csp)) return(-1) ; return(0) ; } /* */ putlin(sptr) register char *sptr ; { if (putcon(sptr)) return(-1) ; if (putnl()) return(-1) ; return(0) ; } /* */ nullcon(nn) register nn ; { /* * Output 'nn' nulls to console terminal - * used for delay. */ while (nn--) putc(0) ; } /* */ putnl() { if (putcon("\r\n")) return(-1) ; return(0) ; } /* */ putcon(csp) register char *csp ; { /* * Function to output null-terminated string pointed to * by 'csp' to the VAX LSI terminal. */ register c ; c = 0 ; while (c = (*csp++)) putc(c) ; return(0) ; } /* */ putc(c) { /* wait for LSI printer to be ready */ while ((mfpr(TXCS) & TXCS_RDY) == 0) ; /* output character */ mtpr(TXDB,c&0177) ; } /* */ getcon(cs) register char *cs ; { /* * Function to return char's from VAX LSI keyboard to * char array 'cs' - input stops when CR or LF received - * null char appended to end of input */ register int c , c2 ; int getc() ; inloop : c = getc() ; /* get 1 char from terminal */ putc(c) ; /* echo char */ if ((c == NL) || (c == CR)) { putc(CR) ; putc(0) ; putc(NL) ; (*cs++) = '\0' ; return(0) ; } else { (*cs++) = c ; goto inloop ; } } /* */ getc() { /* * Return char from VAX LSI terminal char buffer */ int mfpr() ; /* Wait for receiver done (user entered char) */ while ((mfpr(RXCS) & RXCS_DONE) == 0) ; return (mfpr(RXDB) & 0177) ; /* return char from receiver buffer */ } /* */ mtpr(regno,value) { asm(" mtpr 8(ap),4(ap)") ; } /* */ mfpr(regno) { asm(" mfpr 4(ap),r0") ; } /* */ a2l(as) register char *as ; { /* * Convert null-terminated ascii string to binary * and return value. * 1st char in string : * 0 -> octal * x -> hex * else decimal */ register value , base , sign , digit ; digit = value = sign = 0 ; base = 10 ; /* default base */ aloop : if ((digit = (*as++)) == 0) return(value) ; /* null */ if (digit == '-') { sign++ ; goto aloop ; } if (digit == '0') base = 8 ; /* octal base */ else { if (digit == 'x') base = 16 ; /* hex base */ else value = (digit-060) ; /* 060 = '0' */ } while (digit = (*as++)) { if (digit < '0') return(0) ; switch (base) { case 8 : { if (digit > '7') return(0) ; digit -= 060 ; break ; } case 10 : { if (digit > '9') return(0) ; digit -= 060 ; break ; } case 16 : { if (digit <= '9') { digit -= 060 ; break ; } if ((digit >= 'A') && (digit <= 'F')) { digit = (digit - 0101 + 10) ; break ; } if ((digit >= 'a') && (digit <= 'f')) { digit = digit - 0141 + 10 ; break ; } return(0) ; break ; } } value = (value * base) + digit ; } return (sign ? -value : value) ; } /* */ init() { /* * Initialization. * Initialize MBA 0 (disk) . * Set up MBA 0 map register to map a * transfer of 'BLKSIZ' bytes. */ register int page , *mp0 ; M0_cr->reg = MBAinit ; /* MBA 0 init */ RPptr = RP + (dunit * 32 * 4) ; /* start of RP reg's for drive */ if ((*(RPptr+RP_sr) & RP_MOL) == 0) { putlin("unit not online") ; return(-1) ; } *(RPptr+RP_cr) = RP_RIP | RP_GO ; /* drive preset - sets vv */ *(RPptr+RP_off) = RP_FMT ; /* set format bit */ bytoff = (int)(&input[0])&0777 ; /* byte offset of buffer addr */ page = ((int)&input[0] >> 9) & 07777777 ; /* start page of buffer */ mp0 = M0_map ; (*mp0++) = 0x80000000 | page++ ; (*mp0++) = 0x80000000 | page++ ; (*mp0++) = 0 ; return(0) ; } /* */ dread() { /* * Function to read 'BLKSIZ' bytes to buffer 'input[]'. */ register int i , j ; *(RPptr+RP_cr) = RP_DC | RP_GO ; /* RP06 drive clear function code */ *(RPptr+RP_cyl) = dskoff/RP6ST ; /* cylinder no. */ i = dskoff%RP6ST ; j = (i/RP6SEC)<<8 ; /* track */ *(RPptr+RP_stk) = j | (i%RP6SEC) ; /* sector : track */ M0_bc->reg = (-BLKSIZ) ; M0_var->reg = bytoff ; /* virt addr reg = map no. + byte off */ *(RPptr+RP_cr) = RP_RED | RP_GO ; /* read */ dwait() ; /* wait for i/o to finish */ if (derror()) return(-1) ; /* error */ return(0) ; /* normal return */ } /* */ dwait() { /* * Function to wait MBA 0 RP06 disc unit to be ready. */ while ((*(RPptr+RP_sr)&RP_DRY) == 0) ; } /* */ derror() { /* * Function to check for MBA 0 RP06 error. */ if (*(RPptr+RP_sr) & RP_ERR) return(-1) ; return(0) ; } /* */ halt() { asm(" halt") ; } /* */ l2a(val,rptr) register int val ; register char *rptr ; { register int i ; register char *tp ; int knt ; char tmp[20] , sign ; knt = sign = 0 ; if (val < 0) { sign++ ; val = (-val) ; } tp = tmp ; loop : knt++ ; i = val/10 ; /* quotient & base 10 */ (*tp++) = val%10 + '0' ; /* ascii remainder */ val = i ; if (val == 0) { /* done dividing */ if (sign) { knt++ ; (*tp++) = '-' ; } for (i = knt ; i ; i--) (*rptr++) = tmp[i-1] ; (*rptr++) = '\0' ; return(knt) ; } else goto loop ; } /* */ echo(lngword) register int lngword ; { char tmp[30] ; l2a(lngword,tmp) ; putlin(tmp) ; } /* */ prblk() { /* * Print 512 bytes on VAX LSI console as hex * characters. * Translate bytes in 'input[]' to hex char's * and out to console, 64 char's per line. */ register int i , j ; int k ; char c , *hp , *fr ; char tmp[1025] , ltmp[65] ; ltmp[64] = '\0' ; hp = "block # \0\0\0\0\0\0\0" ; l2a(dskoff,&hp[8]) ; putstr(hp) ; putnl() ; putnl() ; hxcnvt(input,512,tmp) ; /* convert bytes to hex char's */ j = numbyt ; for (i = 0 ; (i < 1024) && (j > 0) ; i=+64 ) { hp = ltmp ; fr = (&tmp[i+63]) ; for ( k = 32 ; k ; k--) { (*hp++) = *(fr-1) ; (*hp++) = (*fr--) ; fr-- ; } putstr(ltmp) ; putc(CR) ; nullcon(5) ; putc(NL) ; j -= 32 ; } return(0) ; } /* */ hxcnvt(in,knt,out) register char *in , *out ; int knt ; { /* * Convert 'knt' bytes in char array 'in' to 'knt*2' * hex char's and store in char array 'out'. */ register unsigned int bit4 , byte ; byte = 0 ; while (knt--) { byte = (*in++) ; bit4 = (byte>>4) & 017 ; (*out++) = (bit4<10?bit4+0x30:bit4+0x57) ; bit4 = byte & 017 ; (*out++) = (bit4<10?bit4+0x30:bit4+0x57) ; } return(0) ; }