Initial commit

1 files changed, 24 insertions, 0 deletions

diff --git a/unix/gdev/iism75/README b/unix/gdev/iism75/README
new file mode 100644
index 00000000..60433d4d
--- /dev/null
+++ b/unix/gdev/iism75/README
@@ -0,0 +1,24 @@
+UNIX IRAF/FIO device driver for the IIS Model 75
+2 Feb 1896 Dct.; ported to UNIX from VMS 10 Mar 1987 SRo.
+----------------------------------------------------------------------
+
+This directory contains the IRAF/FIO driver subroutines for the IIS Model 75
+image display.  This directory is self contained.
+
+The model 75 interface is implemented as a transformation on the data stream
+for the model 70.  The high level code thinks that it is talking to a model
+70; we translate the headers as necessary for the model 75 before passing
+them on to the device.  This approach does not provide full access to the
+capabilities of the model 75, however the existing high level code is all
+written for the model 70 and we are not at present interested in the advanced
+features of either display.
+
+
+Driver Procedures:
+
+	zopm75	-- open + allocate
+	zclm75	-- close + deallocate
+	zrdm75	-- asynchronous binary read
+	zwrm75	-- asynchronous binary write
+	zwtm75	-- wait for i/o completion, return status
+	zstm75	-- get device status