1990/1226/ss/uart.c (diff list | history)

1990/1226/sys/src/9/ss/uart.c:1,155 – 1991/0201/sys/src/9/ss/uart.c:0 (short | long | prev)
Deleted. rsc Mon Mar 7 10:33:22 2005
1990/1223		#include "u.h" #include "lib.h" #include "mem.h" #include "dat.h" #include "fns.h"                  enum { /* wr 0 */ ResExtPend= 2<<3, ResTxPend= 5<<3, ResErr= 6<<3,                  /* wr 1 */ TxIntEna= 1<<1, RxIntDis= 0<<3, RxIntFirstEna= 1<<3, RxIntAllEna= 2<<3,                  /* wr 3 */ RxEna= 1, Rx5bits= 0<<6, Rx7bits= 1<<6, Rx6bits= 2<<6, Rx8bits= 3<<6,                  /* wr 4 */ SyncMode= 0<<2, Rx1stop= 1<<2, Rx1hstop= 2<<2, Rx2stop= 3<<2, X16= 1<<6,                  /* wr 5 */ TxRTS= 1<<1, TxEna= 1<<3, TxBreak= 1<<4, TxDTR= 1<<7, Tx5bits= 0<<5, Tx7bits= 1<<5, Tx6bits= 2<<5, Tx8bits= 3<<5,                  /* wr 9 */ IntEna= 1<<3, ResetB= 1<<6, ResetA= 2<<6, HardReset= 3<<6,                  /* wr 11 */ TRxCOutBR= 2, TxClockBR= 2<<3, RxClockBR= 2<<5, TRxCOI= 1<<2,                  /* wr 14 */ BREna= 1, BRSource= 2,                  /* rr 0 */ RxReady= 1, TxReady= 1<<2, RxDCD= 1<<3, RxCTS= 1<<5, RxBreak= 1<<7,                  /* rr 3 */ ExtPendB= 1, TxPendB= 1<<1, RxPendB= 1<<2, ExtPendA= 1<<3, TxPendA= 1<<4, RxPendA= 1<<5, };                  typedef struct SCC SCC; struct SCC { uchar *ptr; /* command/pointer register in Z8530 */ uchar *data; /* data register in Z8530 */ }; SCC scc[2];
1990/1226		#define SCCV (0x0000) /* was 0x0F000000-0x1000 */
1990/1223		#define SCCP 0xF1000000                  #define PRINTING 0x4 #define MASK 0x1                  void sccsetup(void) { ulong pte;                  pte = PTEVALID | PTEWRITE | PTEKERNEL | PTENOCACHE | PTEIO | ((SCCP>>PGSHIFT)&0xFFFF) ; putpmeg(SCCV, pte); scc[0].ptr = (uchar*)(SCCV+0); scc[0].data = (uchar*)(SCCV+2); scc[1].ptr = (uchar*)(SCCV+4); scc[1].data = (uchar*)(SCCV+6); }                  /* * Access registers using the pointer in register 0. * This is a bit stupid when accessing register 0. */ void sccwrreg(SCC *sp, int addr, int value) { *sp->ptr = addr; }                  ushort sccrdreg(SCC *sp, int addr) { *sp->ptr = addr; return *sp->ptr; }                                   /* * non-spooling non-interrupting get and put */ int sccgetc(void) { uchar ch; SCC *sp;                  sp = &scc[1]; while((*sp->ptr&RxReady) == 0) ; return *sp->data; } void sccputc(int ch) { SCC *sp;                  sp = &scc[1]; while((*sp->ptr&TxReady)==0) ; *sp->data = ch; } void sccputs(char *s) { while(*s) sccputc(*s++); }