diff options
Diffstat (limited to 'unix/gdev/iism70/m70.h')
| -rw-r--r-- | unix/gdev/iism70/m70.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/unix/gdev/iism70/m70.h b/unix/gdev/iism70/m70.h new file mode 100644 index 00000000..6a1a7d28 --- /dev/null +++ b/unix/gdev/iism70/m70.h @@ -0,0 +1,27 @@ +# Definitions for the VMS/IIS device driver. + +define IIS_READ 1 # read function code +define IIS_WRITE 0 # write function code +define IIS_INACTIVE -1 # 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 + +define LEN_FCB 30 +define FCB_U_NAME (P2S($1)+16+($2)-1) +define FCB_STATUS Memi[$1+20] # channel status (r, w, err) +define FCB_NBYTES Memi[$1+21] # nbytes last transfer +define FCB_EFN Memi[$1+22] # 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 |