ACS19@UHUPVM1.BITNET (05/17/86)
/* HERE IS THE SECOND PART OF THE RAMDISK ACCESSORY */
/*Copyright 1986 Michael Vederman, distribute freely with proper credit*/
/**************************************************************************/
/* BEGIN PART II */
clear_fat() /* erase any erroneous junk */
{
char *temp;
for(temp=ramdisk_ptr; temp < ramdisk_ptr+9216; temp++)
*temp = 0;
}
/**************************************************************************/
install() /* install ramdisk handler vectors */
{
getbpb = (PL) *bpbvect;
mediach = (PW) *mcvect;
rwabs = (PL) *rwvect;
*bpbvect = rdgetbpb;
*mcvect = rdmediach;
*rwvect = rdrwabs;
*devset = *devset | (0x8L); /* set drive bits - 0x4L for C, etc. */
}
/*************************************************************************/
deinstall() /* very interesting little fact: ROM TOS does not re-init
the device bits, if you reset, the ramdisk drive is still
there, unless you do an xbios(38, deinstall) in main() */
{
*devset = *devset & 0xfffffff7L; /* clear drive bits */
}
/*************************************************************************/
main()
{
appl_init();
phys_handle=graf_handle( &gl_wchar, &gl_hchar, &gl_wbox, &gl_hbox);
menu_id=menu_register( gl_apid," Mike's Ramdisk " );
/* put name into desk menu */
wind_get( 0, WF_WORKXYWH, &xdesk, &ydesk, &wdesk, &hdesk);
/* get max size of window */
xbios(38, deinstall); /* deinstall vectors (just in case of reset)*/
in_place = FALSE; /* ramdisk is not installed yet (for alert box) */
wi_handle=(-1);
start();
}
/**************************************************************************/
LONG atoi(s) /* convert the size entered by user to integer */
char s[];
{
WORD n, i;
for(i=0, n=0; s[i] >= '0' && s[i] <= '9' && i < 5; ++i)
n = 10 * n +s[i] - '0';
return(n);
}
/**************************************************************************/
do_ramdisk()
{
ok = FALSE;
maxsize = Malloc(-1L);
size=atoi(rs_tedinfo[0].te_ptext);
/* In the following, we should probably limit the max size so as to not
screw up the system, but what the heck, you can allocate all your
memory, but for safety sake, it should be about 50-60K less */
if (size)
{
newsize=(size+9)*1024;
newmaxsize = maxsize/1024-9;
if ( newsize > maxsize )
{
form_alert(1,&alert1);
newsize=maxsize;
size=newmaxsize;
}
ramdisk_ptr = Malloc(newsize);
if (ramdisk_ptr)
{
in_place=TRUE;
rdiskbpb.numcl=(WORD)size * 2;
clear_fat();
xbios(38,install);
form_alert(1,&alert3);
ok = TRUE;
}
else
form_alert(1,&alert2);
}
else
form_alert(1,&alert7);
}
/**************************************************************************/
open_vwork() /* standard stuff */
{
int i;
for( i=0; i<10; work_in[i++]=1 ); work_in[10]=2;
handle=phys_handle;
v_opnvwk( work_in, &handle, work_out );
}
/*********************************************************************/
clear_window()
/* paint it white (could be a good song if it was black) */
{
int temp[4];
graf_mouse(M_OFF,0x0L);/* mistake by many programs leaves mouse on */
vsf_interior(handle,2);
vsf_style(handle,8);
vsf_color(handle,0);
temp[0]=xwork;
temp[1]=ywork;
temp[2]=xwork+wwork;
temp[3]=ywork+hwork;
v_bar(handle,temp);
graf_mouse(M_ON,0x0L);
}
/**************************************************************************/
open_window()
{
wi_handle=wind_create( NAME, xdesk, ydesk, wdesk, hdesk );
wind_set( wi_handle, WF_NAME," Mike's Ramdisk v 0.9 ", 0, 0 );
graf_growbox( 15, 27, 160,8, xdesk, ydesk, wdesk,hdesk );
wind_open( wi_handle, xdesk, ydesk, wdesk - 1, hdesk - 1 );
wind_get( wi_handle, WF_WORKXYWH, &xwork, &ywork, &wwork, &hwork );
}
/**************************************************************************/
remove_rdisk() /* see ya later ramdisk */
{
rdiskbpb.numcl=(int)0;
xbios(38, deinstall);
dinstal=TRUE;
Mfree(ramdisk_ptr);
}
/* END PART II */