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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <gki.h>
include "../lib/ids.h"
# IDS_ESCAPE -- Pass a device dependent instruction on to the kernel.
# Most of the display control work is done here.
procedure ids_escape (fn, instruction, nwords)
int fn # function code
short instruction[ARB] # instruction data words
int nwords # length of instruction
pointer p,q
int ids_dcopy()
short frames[IDS_MAXIMPL+2] # storage for frame data
short color[IDS_MAXGCOLOR+1] # ditto for color
short bitpl[IDS_MAXBITPL+1] # ditto for graphics bit plane
short quad[5] # 4 quadrant information
int count, count2, total
int junk
short gki[GKI_ESCAPE_LEN]
data gki[1] /BOI/, gki[2] /GKI_ESCAPE/
include "../lib/ids.com"
begin
switch(fn) {
case IDS_RESET:
call ids_reset(instruction[1])
case IDS_SET_IP:
p = IDS_FRAME(i_kt)
count = ids_dcopy(instruction[1], Mems[p])
call ids_expand(Mems[p],i_maxframes, true)
q = IDS_BITPL(i_kt)
junk = ids_dcopy ( instruction[count+1], Mems[q])
call ids_expand(Mems[q],IDS_MAXBITPL, false)
i_image = true
call zsetup (Mems[p], Mems[q], i_image)
case IDS_SET_GP:
p = IDS_FRAME(i_kt)
count = ids_dcopy(instruction[1], Mems[p])
call ids_expand(Mems[p],i_maxgraph, false)
q = IDS_BITPL(i_kt)
junk = ids_dcopy ( instruction[count+1], Mems[q])
call ids_expand(Mems[q],IDS_MAXBITPL, false)
i_image = false
call zsetup (Mems[p], Mems[q], i_image)
case IDS_DISPLAY_I:
count = ids_dcopy(instruction[2], frames[1])
call ids_expand(frames[1], i_maxframes, true)
count2 = ids_dcopy (instruction[2+count], color[1])
call ids_expand(color[1], IDS_MAXGCOLOR, false)
total = count + count2
count = ids_dcopy(instruction[total+2], quad[1])
call ids_expand(quad[1], 4, false)
call zdisplay_i(instruction[1], frames[1], color, quad)
case IDS_DISPLAY_G:
count = ids_dcopy(instruction[2], bitpl[1])
call ids_expand(bitpl[1], i_maxgraph, false)
count2 = ids_dcopy (instruction[2+count], color[1])
call ids_expand(color[1], IDS_MAXGCOLOR, false)
total = count + count2
count = ids_dcopy(instruction[total+2], quad[1])
call ids_expand(quad[1], 4, false)
call zdisplay_g(instruction[1], bitpl, color, quad)
case IDS_SAVE:
call idssave(instruction[1], nwords)
case IDS_RESTORE:
call idsrestore(instruction[1], nwords)
case IDS_CONTROL:
count = ids_dcopy(instruction[IDS_CTRL_FRAME], frames[1])
call ids_expand(frames[1], i_maxframes, true)
count2 = ids_dcopy (instruction[IDS_CTRL_FRAME+count], color[1])
call ids_expand(color[1], IDS_MAXGCOLOR, false)
total = count + count2
call zcontrol(instruction[IDS_CTRL_REG],
instruction[IDS_CTRL_RW],
frames[1], color[1],
instruction[total+IDS_CTRL_FRAME],
instruction[IDS_CTRL_N],
instruction[total+IDS_CTRL_FRAME+1] )
# if a read, would like to return the information in gki format
# but no mechanism (yet?) for that
}
end
# IDS_DCOPY -- copy frame and bitplane information; return the number of
# items copied, including the IDS_EOD (whose presence is required and assumed).
int procedure ids_dcopy(from, to)
short from[ARB] # from this storage
short to[ARB] # to this area
int i # count
begin
i = 0
repeat {
i = i + 1
to[i] = from[i]
} until ( to[i] == IDS_EOD )
return (i)
end
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