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Annotation of cci/sys/tahoe/cp.h, revision 1.1.1.1

1.1       root        1: /*     Console Processor Interface     */
                      2: /*     Tahoe version, Nov. 1982        */
                      3: 
                      4: /****************************************/
                      5: /*                                     */
                      6: /*     Reduced DCB layout for byte     */
                      7: /*     communication.                  */
                      8: /*                                     */
                      9: /****************************************/
                     10: 
                     11: #define        CPBUFLEN 200            /* Output buffer length */
                     12: #ifndef        LOCORE
                     13: struct cphdr
                     14: {
                     15:        char    cp_unit;        /* Done bit & unit # */
                     16:        char    cp_comm;        /* Command */
                     17:        short   cp_count;       /* Counter (when relevant) */
                     18: };
                     19: 
                     20: struct cpdcb_o                 /* Output structure */
                     21: {
                     22:        struct  cphdr   cp_hdr;
                     23:        char    cp_buf[CPBUFLEN]; /* Buffer for output or 'stty' */
                     24: };
                     25: 
                     26: struct cpdcb_i                 /* Structure for input */
                     27: {
                     28:        struct  cphdr   cp_hdr;
                     29:        char    cpi_buf[4];     /* Buffer for input */
                     30: };
                     31: #endif
                     32: 
                     33: #define        CPDONE  0x80            /* 'Done' bit in cp_unit */
                     34: #define        CPTAKE  0x40            /* CP 'ack' to this cpdcb */
                     35: 
                     36:                /* Values for 'unit' */
                     37: #define        CPUNIT  0               /* The CP itself */
                     38: #define        CPCONS  1               /* Console line */
                     39: #define        CPREMOT 2               /* Remote line */
                     40: 
                     41:                /* Values for 'command' */
                     42: #define        CPRESET 0
                     43: #define        CPWRITE 1
                     44: #define        CPREAD  2
                     45: #define        CPSTTY  3
                     46: #define        CPBOOT  4

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