C/C++ Users Group Library 1996 July/C-C++ Users Group Library July 1996.iso/vol_100/148_01/a99put.c

Text File | 1987-09-26 | 5KB | 239 lines

/*
    TMS9900/99105  Cross-Assembler  v. 1.0

    January, 1985

    Original 6800 version Copyright (c) 1980 William C. Colley, III.
    Modified for the TMS9900/99105  Series by Alexander Cameron.

File:    a99put.c

List and hex output routines.
*/

/*  Get globals:  */

#include "a99.gbl"

/*
Function to form the list output line and put it to
the list device.  Routine also puts the line to the
console in the event of an error.
*/

lineout()
{
    char tbuf[25], *tptr, *bptr, count;
    setmem(tbuf,24,' ');
    tbuf[24] = '\0';
    tptr = tbuf;
    *tptr++ = errcode;
    tptr++;
    if (hexflg != NOCODE) puthex4(address,&tptr);
    else tptr += 4;
    tptr += 3;
    count = 0;
    bptr = binbuf;
    while (TRUE)
    {
        if (count == nbytes || count != 0 && count % 4 == 0)
        {
            putlin(tbuf,&lstbuf);
            if (count > 4) putchr('\n',&lstbuf);
            else putlin(linbuf,&lstbuf);
            if (lstbuf.fd != CONO && errcode != ' ')
            {
                puts(tbuf);
                if (count >= 5) putchar('\n');
                else
                     {linbuf[28]='\n';
                     linbuf[29]='\0';
                      puts(linbuf);
                    }
            }

            tptr = tbuf + 2;
            puthex4(address,&tptr);
            setmem(tptr,14,' ');
            tptr += 3;
        }
        if (count == nbytes) return;
        count++;
        address++;
        puthex2(*bptr++,&tptr);
        if( count % 2 == 0)tptr++;
    }
}

/*
Function to form the hex output line and put it to
the hex output device.
*/

hexout()
{
    char count, *bptr;
    switch (hexflg)
    {
        case PUTCODE:    bptr =binbuf;
                for (count = 1; count <= nbytes; count++)
                {
                    puthex2(*bptr,&hxlnptr);
                    chksum += *bptr++;
                    if (++hxbytes == 16) flshhbf(pc+count);
                }

        case NOCODE:    return;

        case FLUSH:    flshhbf(pc);
                return;

        case NOMORE:    flshhbf(0);
                putlin(":0000000000\n\032",&hexbuf);
                flush(&hexbuf);
                return;
    }
}

/*
Function to put a line of intel hex to the appropriate
device and get a new line started.
*/

flshhbf(loadaddr)
unsigned loadaddr;
{
    if (hxbytes != 0)
    {
        puthex2(-(chksum+hxbytes),&hxlnptr);
        *hxlnptr++ = '\n';
        *hxlnptr++ = '\0';
        hxlnptr = hxlnbuf + 1;
        puthex2(hxbytes,&hxlnptr);
        putlin(hxlnbuf,&hexbuf);
    }
    hxbytes = 0;
    hxlnptr = hxlnbuf;
    *hxlnptr++ = ':';
    hxlnptr += 2;
    puthex4(loadaddr,&hxlnptr);
    puthex2(0,&hxlnptr);
    chksum = (loadaddr >> 8) + (loadaddr & 0xff);
}

/*
Function to put a 4-digit hex number into an output line.
*/

puthex4(number,lineptr)
unsigned number;
char **lineptr;
{
    puthex2(number>>8,lineptr);
    puthex2(number,lineptr);
}

/*
Function to put a 2-digit hex number into an output line.
*/

puthex2(number,lineptr)
char number, **lineptr;
{
    if ((**lineptr = (number >> 4) + '0') > '9') **lineptr += 7;
    if ((*++*lineptr = (number & 0xf) + '0') > '9') **lineptr += 7;
    ++(*lineptr);
}

/*
Function to put a decimal number into an output line.
*/

putdec(number,lineptr)
unsigned number;
char **lineptr;
{
    if (number == 0) return;
    putdec(number/10,lineptr);
    *(*lineptr)++ = number % 10 + '0';
}

/*
Function to move a line to a disk buffer.  The line is pointed to
by line, and the disk buffer is specified by its disk I/O buffer
structure dskbuf.
*/

putlin(line,dskbuf)
char *line;
struct diskbuf *dskbuf;
{
    while (*line != '\0') putchr(*line++,dskbuf);
}

/*
Function to put a character into a disk buffer.  The character
is sent in char, and the disk buffer is specified by the address
of its structure.  Newline characters (LF's) are converted to
CR/LF pairs.
*/

putchr(byte,dskbuf)
char byte;
struct diskbuf *dskbuf;
{
    char c;
    byte &= 0x7f;
    if(kbhit())
    {
        c = getchar();
        if(c == CTLC) wipeout("\n");
        if(c == CTLS) while(kbhit() == 0) getchar();
    }
    switch (dskbuf -> fd)
    {
        case CONO:    if (byte != CPMEOF) putchar(byte);

        case NOFILE:    return;

        case LST:    if (byte != CPMEOF)
                {
                    if (byte == '\n') bdos(LISTOUT,'\r');
                    bdos(LISTOUT,byte);
                }
                else putchr('\n',dskbuf);
                return;

        default:    if(dskbuf->fd >= 20){printf("fd=%u\n",dskbuf->fd);return;}
                if(byte == '\n') putchr('\r',dskbuf);
                if (dskbuf -> pointr >= dskbuf -> space + (NSECT * 128))
                {    if (write(dskbuf->fd,dskbuf->space,NSECT) == -1)
                        {
                        printf("\nDisk write error ++%s\n",errmsg(errno()));
                        wipeout("\n");
                        }
                    dskbuf -> pointr = dskbuf -> space;
                }
                *(dskbuf -> pointr)++ = byte;
                return;

    }
}

/*
Function to flush a disk buffer.
*/

flush(dskbuf)
struct diskbuf *dskbuf;
{
    int t;
    if (dskbuf -> fd < LODISK) return;
    t = dskbuf -> pointr - dskbuf -> space;
    t = (t % 128 == 0) ? t / 128 : t / 128 + 1;
    while (dskbuf -> pointr < &dskbuf -> space[NSECT * 128]) *(dskbuf -> pointr)++ = 0;
    if (write(dskbuf->fd,dskbuf->space,t) == -1) wipeout("\nDisk write error in flush.\n");
    if (close(dskbuf->fd) == -1) wipeout("\nError closing file.\n");
}