diff options
Diffstat (limited to 'unix/gdev/iism75/m75.h')
| -rw-r--r-- | unix/gdev/iism75/m75.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/unix/gdev/iism75/m75.h b/unix/gdev/iism75/m75.h new file mode 100644 index 00000000..832aa423 --- /dev/null +++ b/unix/gdev/iism75/m75.h @@ -0,0 +1,28 @@ +# Definitions for the Model 75 UNIX/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 + +# Function control block structure containing only our own internal variables. + +define LEN_FCB 20 +define FCB_CHAN Memi[($1)] # os channel +define FCB_STATUS Mems[P2S(($1)+1)] # channel status (r, w, err) +define FCB_NBYTES Mems[P2S(($1)+2)] # nbytes last transfer +define FCB_STATE Mems[P2S(($1)+3)] # instruction processing state +define FCB_IISHDR Mems[P2S(($1)+4)] # m70 header of current instr. + # (extra space) + +# Instruction processing states + +define READY 0 # ready for new instruction +define DATA_READ 1 # read data to complete instruction +define DATA_WRITE 2 # write data to complete instruction + +# IIS device status words. + +define IIS_FILSIZE (512 * 512 * SZB_CHAR) +define IIS_BLKSIZE 1024 +define IIS_OPTBUFSIZE (512 * SZB_CHAR) +define IIS_MAXBUFSIZE 16384 |