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-rw-r--r--unix/gdev/m70vms/README68
-rw-r--r--unix/gdev/m70vms/fcbu.inc6
-rw-r--r--unix/gdev/m70vms/m70.h30
-rw-r--r--unix/gdev/m70vms/m70cls.f26
-rw-r--r--unix/gdev/m70vms/m70get.f43
-rw-r--r--unix/gdev/m70vms/m70io.f75
-rw-r--r--unix/gdev/m70vms/m70mcl.f35
-rw-r--r--unix/gdev/m70vms/m70opn.f41
-rw-r--r--unix/gdev/m70vms/m70rel.f19
-rw-r--r--unix/gdev/m70vms/m70wt.f44
-rw-r--r--unix/gdev/m70vms/m70wti.f46
-rw-r--r--unix/gdev/m70vms/mkpkg29
-rw-r--r--unix/gdev/m70vms/zclm70.x24
-rw-r--r--unix/gdev/m70vms/zopm70.x59
-rw-r--r--unix/gdev/m70vms/zrdm70.x36
-rw-r--r--unix/gdev/m70vms/zstm70.x28
-rw-r--r--unix/gdev/m70vms/zwrm70.x36
-rw-r--r--unix/gdev/m70vms/zwtm70.x44
18 files changed, 689 insertions, 0 deletions
diff --git a/unix/gdev/m70vms/README b/unix/gdev/m70vms/README
new file mode 100644
index 00000000..23a06824
--- /dev/null
+++ b/unix/gdev/m70vms/README
@@ -0,0 +1,68 @@
+VMS IRAF/FIO device driver for the IIS Model 70
+(will probably also work for the model 75). 11/85 dct
+----------------------------------------------------------------------
+
+This directory contains the IRAF/FIO driver subroutines for the IIS Model 70
+image display on VMS. This directory is self contained; no external code is
+required other than the VMS/IIS device driver itself. The code should be
+portable to any VMS system.
+
+
+Driver Procedures:
+
+ zopm70 -- open + allocate
+ zclm70 -- close + deallocate
+ zrdm70 -- asynchronous binary read
+ zwrm70 -- asynchronous binary write
+ zwtm70 -- wait for i/o completion, return status
+ zstm70 -- get device status
+
+
+On a UNIX system the ordinary binary file driver (ZFIOBF) may be used for these
+functions. This might work on VMS too, but the IRAF/VMS binary file driver is
+complicated and uses RMS, so I did not bother to try. This driver uses a
+modified version local KPNO IIS library, which I suppose came originally from
+IIS corp. The interface procedures are written in VMS Fortran and make direct
+calls to the VMS system services. The original library has been modified to
+convert all the names to the prefix "m70", and to remove all Fortran i/o.
+
+
+VMS/IIS Interface Procedures:
+
+ m70get (fcb, error) # open+allocate+mclear
+ m70rel (fcb) # close+deallocate
+ m70opn (fcb, error) # open
+ m70cls (fcb) # close
+ m70mcl (fcb, error) # master clear
+
+ m70io (fcb, data, count, read, opcd, iosb, error)
+ m70wt (fcb, bfnum, bfcnt, iosb, error)
+ m70wti (fcb, func, time, button, x, y)
+
+
+M70IO: I/O between M70 and a VAX.
+
+ fcb function communications block.
+ data input/output buffer.
+ count number of words to read/write.
+ read 0 -> write, 1 -> read.
+ opcd :: 0 -> qio with efn = 1 and wait for completion
+ 1 -> qio with efn = 2
+ 2 -> qio with efn = 3
+ iosb I/O status quadword
+ error :: -1 => display not available
+ 0 => success
+ 1 => time/out
+ 2 => invalid or non-responding device
+ 1000 > machine dependent error code
+
+
+M70WT: Wait for i/o.
+
+ fcb function communication block.
+ bfnum used to determine event flag to wait for
+ bfcnt number of words in buffer. should be -1 indicating
+ i/o pending. reset to zero when i/o completed.
+ iosb i/o status block
+ error 0 success, -1 not acquired, 1 timeout,
+ 2 invalid device, 1000+n system dep. error
diff --git a/unix/gdev/m70vms/fcbu.inc b/unix/gdev/m70vms/fcbu.inc
new file mode 100644
index 00000000..54f23244
--- /dev/null
+++ b/unix/gdev/m70vms/fcbu.inc
@@ -0,0 +1,6 @@
+c
+c vax offsets for display.for and termio.for
+c
+ parameter fcb_u_spool = 21
+ parameter fcb_u_m70_chan = 19
+ parameter fcb_u_m70_name = 17
diff --git a/unix/gdev/m70vms/m70.h b/unix/gdev/m70vms/m70.h
new file mode 100644
index 00000000..16b4c938
--- /dev/null
+++ b/unix/gdev/m70vms/m70.h
@@ -0,0 +1,30 @@
+# Definitions for the VMS/IIS device driver.
+
+define IIS_READ 1 # read function code
+define IIS_WRITE 0 # write function code
+define IIS_INACTIVE 2 # no i/o in progress
+
+define EFN EFN2 # EFN to use for i/o
+define EFN1W 0 # efn #1, wait for completion
+define EFN2 1 # efn #2, no wait for completion
+define EFN3 2 # efn #3, no wait for completion
+
+# Function control block structure for IIS. The first part of the structure
+# is filled in by VMS at open time; all we need to know is the offset of the
+# device name. We use the latter part of the buffer for our own internal
+# variables.
+
+define LEN_FCB 28
+define FCB_U_NAME Mems[($1)+16+($2)-1]
+define FCB_IOSB Mems[($1)+20+($2)-1]
+define FCB_KCHAN Mems[($1)+24] # NULL if on local node, else remote
+define FCB_STATUS Mems[($1)+25] # channel status (r, w, err)
+define FCB_NBYTES Mems[($1)+26] # nbytes last transfer
+define FCB_EFN Mems[($1)+27] # event flag used for transfer
+
+# IIS device status words.
+
+define IIS_FILSIZE (512 * 512 * SZB_CHAR)
+define IIS_BLKSIZE 1024
+define IIS_OPTBUFSIZE (512 * SZB_CHAR)
+define IIS_MAXBUFSIZE 32768
diff --git a/unix/gdev/m70vms/m70cls.f b/unix/gdev/m70vms/m70cls.f
new file mode 100644
index 00000000..9eb2fcd3
--- /dev/null
+++ b/unix/gdev/m70vms/m70cls.f
@@ -0,0 +1,26 @@
+ subroutine m70cls (fcb)
+c
+c Routine to close model 70 display
+c
+ integer fcb(*)
+ include 'fcbu.inc'
+c
+ integer*4 sys$dassgn, chan, junk
+ integer*2 chan2(2)
+ equivalence (chan, chan2)
+c
+c call wtexec (fcb)
+c
+ chan2(1) = fcb(fcb_u_m70_chan)
+ chan2(2) = fcb(fcb_u_m70_chan+1)
+c
+c if (chan.ne.0) call lib$signal (%val(sys$dassgn (%val(chan))))
+ if (chan.ne.0) then
+ junk = sys$dassgn (%val(chan))
+ endif
+c
+ fcb(fcb_u_m70_chan) = 0
+ fcb(fcb_u_m70_chan+1) = 0
+c
+ return
+ end
diff --git a/unix/gdev/m70vms/m70get.f b/unix/gdev/m70vms/m70get.f
new file mode 100644
index 00000000..c9d0b1c2
--- /dev/null
+++ b/unix/gdev/m70vms/m70get.f
@@ -0,0 +1,43 @@
+ subroutine m70get (fcb, error)
+c
+c Routine to get (allocate) the model 70
+c
+c arguments:
+c
+c fcb function communications block
+c
+c error -2 => device already allocated
+c -1 => m70 not acquired
+c 0 => success
+c 1 => timeout
+c 2 => invalid device or powerfail
+c >=1000 machine dependent error number
+c
+ integer fcb(*), error
+c
+ include 'fcbu.inc'
+ external ss$_normal, ss$_devalloc
+ integer*4 len,status, sys$alloc
+ integer*2 nam2(2), stat
+ byte nam(4)
+ character name*4, result*8
+ equivalence (nam2, nam), (name, nam), (status, stat)
+c
+ nam2(1) = fcb(fcb_u_m70_name)
+ nam2(2) = fcb(fcb_u_m70_name+1)
+c
+ status = sys$alloc (name, len, result,)
+ if (status.ne.%loc(ss$_normal)) then
+ if (status .eq. %loc(ss$_devalloc)) then
+ error = -2
+ else
+ error = 1000 + stat
+ endif
+ else
+ call m70opn (fcb, error)
+ if (error .ne. 0) return
+ call m70mcl (fcb, error)
+ endif
+c
+ return
+ end
diff --git a/unix/gdev/m70vms/m70io.f b/unix/gdev/m70vms/m70io.f
new file mode 100644
index 00000000..cbe0418e
--- /dev/null
+++ b/unix/gdev/m70vms/m70io.f
@@ -0,0 +1,75 @@
+ subroutine m70io (fcb, data, count, read, opcd, iosb, error)
+c
+c Routine does io between M70 and a VAX
+c
+c Parameters:
+c
+c fcb function communications block.
+c
+c data input/output buffer.
+c
+c count number of words to read/write.
+c
+c read 0 -> write, 1 -> read.
+c
+c opcd 0 -> qio with efn = 1 and wait for completion
+c 1 -> qio with efn = 2
+c 2 -> qio with efn = 3
+c
+c iosb I/O status quadword
+c
+c error -1 => display not available
+c 0 => success
+c 1 => time/out
+c 2 => invalid or non-responding device
+c 1000 > machine dependent error code
+c
+ integer fcb(*), data(1), count, read, opcd, error
+ integer*4 iosb(2)
+c
+ include 'fcbu.inc'
+ external io$_writevblk, io$_readvblk, ss$_timeout, ss$_powerfail
+ integer*4 chan, sys$qio, sys$waitfr, func, status, l_iosb(2)
+ integer*2 chan2(2), stat(2)
+ equivalence (chan, chan2), (status, stat(1))
+c
+ chan2(1) = fcb(fcb_u_m70_chan)
+ chan2(2) = fcb(fcb_u_m70_chan+1)
+c
+ if (read.eq.1) then
+ func = %loc(io$_readvblk)
+ else
+ func = %loc(io$_writevblk)
+ endif
+c
+ if (opcd.eq.0) then
+ status = sys$qio (%val(opcd+1), %val(chan), %val(func),
+ 1 l_iosb,,, data, %val(2*count),,,,)
+ if (status) then
+ status = sys$waitfr (%val(1))
+ if (l_iosb(1)) then
+ error = 0
+ else
+ stat(1) = lib$match_cond
+ 1 (iosb, ss$_timeout, ss$_powerfail)
+ if (stat(1) .eq. 0) then
+ error = 1000 + iosb(1)
+ else
+ error = stat(1)
+ endif
+ endif
+ else
+ error = 1000 + stat(1)
+ endif
+ else
+ status = sys$qio (%val(opcd+1), %val(chan), %val(func),
+ 1 iosb,,, data, %val(2*count),,,,)
+ if (status) then
+ error = 0
+ else
+ error = 1000 + stat(1)
+ endif
+ endif
+c
+ return
+ end
diff --git a/unix/gdev/m70vms/m70mcl.f b/unix/gdev/m70vms/m70mcl.f
new file mode 100644
index 00000000..c9fb5c98
--- /dev/null
+++ b/unix/gdev/m70vms/m70mcl.f
@@ -0,0 +1,35 @@
+ subroutine m70mcl (fcb, error)
+c
+c master clear model 70
+c
+ integer fcb(*), error
+c
+ include 'fcbu.inc'
+ external io$_rewind, ss$_normal
+ integer*4 status, iosb(2), chan, sys$qiow
+ integer*2 chan2(2), iostat, stat
+ equivalence (chan, chan2), (iosb, iostat)
+ equivalence (status, stat)
+ external ss$_timeout, ss$_powerfail
+c
+ chan2(1) = fcb(fcb_u_m70_chan)
+ chan2(2) = fcb(fcb_u_m70_chan+1)
+c
+ status = sys$qiow (, %val(chan), io$_rewind, iosb,,,,,,,,)
+ if (status) then
+ if (iosb(1)) then
+ error = 0
+ else
+ status = lib$match_cond (iosb, ss$_timeout, ss$_powerfail)
+ if (status .eq. 0) then
+ error = 1000 + iostat
+ else
+ error = status
+ endif
+ endif
+ else
+ error = 1000 + stat
+ endif
+c
+ return
+ end
diff --git a/unix/gdev/m70vms/m70opn.f b/unix/gdev/m70vms/m70opn.f
new file mode 100644
index 00000000..4bb91b3a
--- /dev/null
+++ b/unix/gdev/m70vms/m70opn.f
@@ -0,0 +1,41 @@
+ subroutine m70opn (FCB, error)
+C
+c Routine to open model 70
+c
+c Error is returned as:
+c -1 = display open
+c 0 = OK
+c 1 = timeout
+c 2 = invalid or non-responding device
+c >= 1000 : machine dependent error number
+c
+ integer fcb(*), error
+ include 'fcbu.inc'
+C
+ integer*4 sys$assign, chan, status
+ integer*2 chan2(2), name2(2), stat(2)
+ byte name1(4)
+ character*4 m70
+ equivalence (chan, chan2), (status, stat(1))
+ equivalence (name1, name2), (name1, m70)
+C
+ name2(1) = fcb(fcb_u_m70_name)
+ name2(2) = fcb(fcb_u_m70_name+1)
+ chan2(1) = fcb(fcb_u_m70_chan)
+ chan2(2) = fcb(fcb_u_m70_chan+1)
+c
+ if (chan.eq.0) then
+ status = sys$assign ('_'//m70//':', chan,,)
+ if (status) then
+ fcb(fcb_u_m70_chan) = chan2(1)
+ fcb(fcb_u_m70_chan+1) = chan2(2)
+ error = 0
+ else
+ error = 1000 + stat(1)
+ endif
+ else
+ error = -1
+ endif
+c
+ return
+ end
diff --git a/unix/gdev/m70vms/m70rel.f b/unix/gdev/m70vms/m70rel.f
new file mode 100644
index 00000000..7b686d10
--- /dev/null
+++ b/unix/gdev/m70vms/m70rel.f
@@ -0,0 +1,19 @@
+ subroutine m70rel (fcb)
+c
+c routine to release(DEALLOCATE) the model 70
+c
+ integer fcb(*)
+c
+ include 'fcbu.inc'
+ integer*2 dev2(2)
+ byte dev(4)
+ character*4 m70
+ equivalence (dev2,dev), (m70,dev)
+c
+ call m70cls (fcb)
+ dev2(1) = fcb(fcb_u_m70_name)
+ dev2(2) = fcb(fcb_u_m70_name+1)
+ call sys$dalloc ('_'//m70//':',)
+c
+ return
+ end
diff --git a/unix/gdev/m70vms/m70wt.f b/unix/gdev/m70vms/m70wt.f
new file mode 100644
index 00000000..715a1c68
--- /dev/null
+++ b/unix/gdev/m70vms/m70wt.f
@@ -0,0 +1,44 @@
+ subroutine m70wt (fcb, bfnum, bfcnt, iosb, error)
+c
+c routine to wait for completion of buffer write on pdp-11's
+c
+c fcb function communication block.
+c bfnum used to determine event flag to wait for
+c bfcnt number of words in buffer. should be -1 indicating
+c i/o pending. reset to zero when i/o completed.
+c iosb i/o status block
+c error 0 success, -1 not acquired, 1 timeout,
+c 2 invalid device, 1000+n system dep. error
+c
+ integer fcb(*)
+ integer bfnum, bfcnt, error
+ integer*4 iosb(2), status
+ integer*2 stat(2)
+c
+ integer*4 sys$waitfr
+ equivalence (status, stat(1))
+ external ss$_timeout, ss$_powerfail
+c
+c is this wait required?
+c
+ error = 0
+ if (bfcnt .ge. 0) return
+c
+ status = sys$waitfr (%val(bfnum+1))
+ if (status) then
+ bfcnt = 0
+ if (.not. iosb(1)) then
+ stat(1) = lib$match_cond
+ 1 (iosb, ss$_timeout, ss$_powerfail)
+ if (stat(1) .eq. 0) then
+ error = 1000 + iosb(1)
+ else
+ error = stat(1)
+ endif
+ endif
+ else
+ error = 1000 + stat(1)
+ endif
+c
+ return
+ end
diff --git a/unix/gdev/m70vms/m70wti.f b/unix/gdev/m70vms/m70wti.f
new file mode 100644
index 00000000..0aabd1fd
--- /dev/null
+++ b/unix/gdev/m70vms/m70wti.f
@@ -0,0 +1,46 @@
+ subroutine m70wti (fcb, func, time, button, x, y)
+c
+c This routine waits for the appropriate interupt from the
+c Unibus M70 interface card, then returns button and cursor
+c information.
+c
+c
+c parameter descriptions:
+c
+c fcb is a system info. array.
+c
+c func is interpreted:
+c 0 ==> wait for button push.
+c 1 ==> wait for cursor move.
+c 2 ==> wait for button push or cursor move.
+c
+ integer fcb(*), func, time, button, x, y
+c
+ include 'fcbu.inc'
+ external io$_rewindoff
+ integer*4 sys$qiow, mask, chan, iosb(2)
+ integer*2 chan2(2)
+ equivalence (chan, chan2)
+c
+ chan2(1) = fcb(fcb_u_m70_chan) ! get M70 channel
+ chan2(2) = fcb(fcb_u_m70_chan+1)
+c
+ if (func.eq.0) then
+ mask = '0400'x ! wait for button
+ elseif (func.eq.1) then
+ mask = '0800'x ! wait for trackball
+ elseif (func.eq.2) then
+ mask = '0C00'x ! wait for button or trackball
+ else
+ mask = '0C00'x
+ endif
+c
+ status = sys$qiow (, %val(chan), io$_rewindoff,
+ 1 iosb,,,%val(mask),,,,,)
+c
+c Get button word and X-Y position of cursor
+c
+ call rbutn (fcb, button, x, y)
+c
+ return
+ end
diff --git a/unix/gdev/m70vms/mkpkg b/unix/gdev/m70vms/mkpkg
new file mode 100644
index 00000000..976cc1e4
--- /dev/null
+++ b/unix/gdev/m70vms/mkpkg
@@ -0,0 +1,29 @@
+# Makelib for the VMS version of the IIS driver.
+
+$checkout libpkg.a ../
+$update libpkg.a
+$checkin libpkg.a ../
+$exit
+
+libpkg.a:
+ @(i2)
+ zclm70.x m70.h <mach.h> <knet.h>
+ zopm70.x m70.h <mach.h> <knet.h>
+ zrdm70.x m70.h <mach.h> <knet.h>
+ zstm70.x m70.h <mach.h> <fio.h>
+ zwrm70.x m70.h <mach.h> <knet.h>
+ zwtm70.x m70.h <mach.h> <knet.h>
+ ;
+
+i2: # Compile the VMS/Fortran IIS i/o routines with the VMS /NOI4 option.
+ $set XFLAGS = "-c -O -i2"
+
+ m70cls.f fcbu.inc
+ m70get.f fcbu.inc
+ m70io.f fcbu.inc
+ m70mcl.f fcbu.inc
+ m70opn.f fcbu.inc
+ m70rel.f fcbu.inc
+ m70wt.f
+ m70wti.f fcbu.inc
+ ;
diff --git a/unix/gdev/m70vms/zclm70.x b/unix/gdev/m70vms/zclm70.x
new file mode 100644
index 00000000..a7ebb8f7
--- /dev/null
+++ b/unix/gdev/m70vms/zclm70.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+include <knet.h>
+include "m70.h"
+
+# ZCLM70 -- Close and deallocate the IIS.
+
+procedure zclm70 (chan, status)
+
+int chan # FCB pointer for device
+int status
+pointer fcb
+
+begin
+ fcb = chan
+ if (FCB_KCHAN(fcb) == NULL) {
+ call zwtm70 (chan, status)
+ call m70rel (Mems[fcb])
+ } else
+ call zclsbf (FCB_KCHAN(fcb), status)
+
+ call mfree (fcb, TY_SHORT)
+end
diff --git a/unix/gdev/m70vms/zopm70.x b/unix/gdev/m70vms/zopm70.x
new file mode 100644
index 00000000..f338dbe7
--- /dev/null
+++ b/unix/gdev/m70vms/zopm70.x
@@ -0,0 +1,59 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+include <knet.h>
+include "m70.h"
+
+# ZOPM70 -- Open the IIS for binary file i/o. The device will be automatically
+# allocated if necessary.
+
+procedure zopm70 (device, mode, chan)
+
+char device[ARB] # packed VMS device name
+int mode # access mode
+int chan # receives device channel
+
+pointer fcb
+int kchan
+char upkdev[SZ_FNAME]
+int ki_connect()
+
+short ier
+% character m70*4
+% integer*2 namw(2)
+% equivalence (m70, namw)
+
+begin
+ call calloc (fcb, LEN_FCB, TY_SHORT)
+
+ # Use the binary file driver if the device resides on a remote node.
+ # This precludes remote access to a VMS hosted IIS at present.
+
+ if (ki_connect (device) != NULL) {
+ call zopnbf (device, mode, kchan)
+ if (kchan != ERR)
+ FCB_KCHAN(fcb) = kchan
+ } else {
+ # Load string descriptor for device name into FCB.
+ call strupk (device, upkdev, SZ_FNAME)
+% call f77pak (upkdev, m70, 4)
+
+ FCB_U_NAME(fcb,1) = namw[1]
+ FCB_U_NAME(fcb,2) = namw[2]
+ FCB_KCHAN(fcb) = NULL
+ FCB_STATUS(fcb) = IIS_INACTIVE
+ FCB_NBYTES(fcb) = 0
+
+ # Allocate and open the device.
+ call m70get (Mems[fcb], ier)
+ kchan = ier
+ if (kchan != 0)
+ kchan = ERR
+ }
+
+ if (kchan < 0) {
+ call mfree (fcb, TY_SHORT)
+ chan = ERR
+ } else
+ chan = fcb
+end
diff --git a/unix/gdev/m70vms/zrdm70.x b/unix/gdev/m70vms/zrdm70.x
new file mode 100644
index 00000000..2bf726ab
--- /dev/null
+++ b/unix/gdev/m70vms/zrdm70.x
@@ -0,0 +1,36 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+include <knet.h>
+include "m70.h"
+
+# ZRDM70 -- Initiate an asynchronous read from the IIS.
+
+procedure zrdm70 (chan, buf, nbytes, offset)
+
+int chan # FCB pointer for device
+char buf[ARB] # output buffer
+int nbytes # number of bytes to read
+long offset # not used for this device
+
+pointer fcb
+short rwflag, opcd, nwords, ier
+data rwflag /IIS_READ/, opcd /EFN/
+
+begin
+ fcb = chan
+ if (FCB_KCHAN(fcb) == NULL) {
+ nwords = nbytes / (SZ_SHORT * SZB_CHAR)
+ call m70io (Mems[fcb], buf, nwords, rwflag, opcd, FCB_IOSB(fcb,1),
+ ier)
+
+ FCB_NBYTES(fcb) = nbytes
+ FCB_EFN(fcb) = opcd
+
+ if (ier != 0)
+ FCB_STATUS(fcb) = ERR
+ else
+ FCB_STATUS(fcb) = IIS_READ
+ } else
+ call zardbf (FCB_KCHAN(fcb), buf, nbytes, offset)
+end
diff --git a/unix/gdev/m70vms/zstm70.x b/unix/gdev/m70vms/zstm70.x
new file mode 100644
index 00000000..2b790dfa
--- /dev/null
+++ b/unix/gdev/m70vms/zstm70.x
@@ -0,0 +1,28 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+include <fio.h>
+include "m70.h"
+
+# ZSTM70 -- Return device status for the IIS.
+
+procedure zstm70 (chan, what, lvalue)
+
+int chan # FCB pointer for device
+int what # status parameter
+long lvalue
+
+begin
+ switch (what) {
+ case FSTT_FILSIZE:
+ lvalue = IIS_FILSIZE
+ case FSTT_BLKSIZE:
+ lvalue = IIS_BLKSIZE
+ case FSTT_OPTBUFSIZE:
+ lvalue = IIS_OPTBUFSIZE
+ case FSTT_MAXBUFSIZE:
+ lvalue = IIS_MAXBUFSIZE
+ default:
+ lvalue = ERR
+ }
+end
diff --git a/unix/gdev/m70vms/zwrm70.x b/unix/gdev/m70vms/zwrm70.x
new file mode 100644
index 00000000..7cc1ef8a
--- /dev/null
+++ b/unix/gdev/m70vms/zwrm70.x
@@ -0,0 +1,36 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+include <knet.h>
+include "m70.h"
+
+# ZWRM70 -- Initiate an asynchronous write to the IIS.
+
+procedure zwrm70 (chan, buf, nbytes, offset)
+
+int chan # FCB pointer for device
+char buf[ARB] # input buffer
+int nbytes # number of bytes to write
+long offset # not used for this device
+
+pointer fcb
+short rwflag, opcd, nwords, ier
+data rwflag /IIS_WRITE/, opcd /EFN/
+
+begin
+ fcb = chan
+ if (FCB_KCHAN(fcb) == NULL) {
+ nwords = nbytes / (SZ_SHORT * SZB_CHAR)
+ call m70io (Mems[fcb], buf, nwords, rwflag, opcd, FCB_IOSB(fcb,1),
+ ier)
+
+ FCB_NBYTES(fcb) = nbytes
+ FCB_EFN(fcb) = opcd
+
+ if (ier != 0)
+ FCB_STATUS(fcb) = ERR
+ else
+ FCB_STATUS(fcb) = IIS_WRITE
+ } else
+ call zawrbf (FCB_KCHAN(fcb), buf, nbytes, offset)
+end
diff --git a/unix/gdev/m70vms/zwtm70.x b/unix/gdev/m70vms/zwtm70.x
new file mode 100644
index 00000000..69ab39da
--- /dev/null
+++ b/unix/gdev/m70vms/zwtm70.x
@@ -0,0 +1,44 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+include <knet.h>
+include "m70.h"
+
+# ZWTM70 -- Wait for i/o completion and return the number of bytes read or
+# written or ERR. Repetitive calls return the same value.
+
+procedure zwtm70 (chan, status)
+
+int chan # FCB pointer for device
+int status # nbytes transferred or ERR
+
+pointer fcb
+short bfnum, bufcnt, ier
+
+begin
+ fcb = chan
+
+ if (FCB_KCHAN(fcb) == NULL) {
+ switch (FCB_STATUS(fcb)) {
+ case ERR:
+ status = ERR
+ case IIS_INACTIVE:
+ status = FCB_NBYTES(fcb)
+
+ default:
+ bfcnt = -1 # m70wt is a nop if we don't do this
+ bfnum = FCB_EFN(fcb)
+
+ call m70wt (Mems[fcb], bfnum, bfcnt, FCB_IOSB(fcb,1), ier)
+
+ if (ier != 0)
+ status = ERR
+ else
+ status = FCB_NBYTES(fcb)
+
+ FCB_STATUS(fcb) = IIS_INACTIVE
+ }
+
+ } else
+ call zawtbf (FCB_KCHAN(fcb), status)
+end
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