devmisc.c

/**************************************************
UZI (Unix Z80 Implementation) Kernel:  devmisc.c
***************************************************/


#include "unix.h"
#include "extern.h"

mem_read(minor, rawflag)
int minor;
int rawflag;
{
    bcopy((char *)(512*udata.u_offset.o_blkno+udata.u_offset.o_offset),
                 udata.u_base, udata.u_count);
    return(udata.u_count);
}

mem_write(minor, rawflag)
int minor;
int rawflag;
{
    bcopy(udata.u_base,
        (char *)(512*udata.u_offset.o_blkno+udata.u_offset.o_offset),
                udata.u_count);
    return(udata.u_count);
}



null_write(minor, rawflag)
int minor;
int rawflag;
{
    return(udata.u_count);
}



static char lop = 0;

lpr_open()
{
    lop = 1;
    return(0);
}

lpr_close()
{
    if (lop)
    {
        lop  = 0;
        lpout('\f');
        lpout('\f');
    }
    return(0);
}



lpr_write(minor, rawflag)
int minor;
int rawflag;
{
    unsigned n;

    n = udata.u_count;
    while (n--)
        lpout(*udata.u_base++);
    return(udata.u_count);
}


lpout(c)
char c;
{
    while(in(0x84)&02)
        ;

    out(c,0x85);
    out(0xfe,0x86);
    out(0xff,0x86);
    out(0xff,0x85);
}


#include "devmt.c"