Labels:text | screenshot | parallel | black and white | document | number | line | diagram | receipt OCR: System Variables - B. 11 S M M T F T T T g g 0 a 3 00COMO 0 0 S T T 3 Location(s ) Size Type Meaning 0x00000484 BYTE RAM conterm: This location contains a bit array which determine several system attributes as follows: Bit Meaning if Set 0 Enable key-click 1 Enable key repeat 2 Enable system bell 3 Cause Booning to return shift status 0x00000485 BYTE RAM Reserved 0x00000488 LONG RAM tro 14ret: This value is used by Trap #14 OS code to store the return address. 0x0000048.A LONG RAM criticret: This value is used by ety_critic handling code to store the return address. 0x0000048E - BYTE RAM themd': This is the MD (Memory Descriptor 0x0000049D structure) initialized by the BIOS at boot and returned by Getmpb( ). 0x0000049E LONG RAM _mo': This is a pointer to additional MD structures. 0x000004A2 LONG RAM savotr. This is a pointer to the buffer which the BIOS uses to save internal registers. 0x000004A6 WORD RAM _Adops: This value indicates the number of floppy drives currently connected to the system. 0x000004A8 LONG RAM con_state: This is a vector to internal console output routines which is set to various VT-52 ESC functions. 0x000004AC WORD RAM save_row. This value contains the row number of the cursor temporarily when using the ESC-Y VT-52 sequence. 0x000004AE LONG RAM sav_cont: This points to a temporary buffer where the processor context is saved. 0x000004B2 - LONG RAM bud: The first longword here points to a BCB 0x00000486 (Buffer Control Blodo) used to store data sectors. The second longword points to a BCB which is used to store FAT and directory sectors. 0x000004BA LONG RAM _hz_200: This value is an ongoing counter for the internal 200Hz clock. It is used as a seed value for the Random() function. 0x000004BE LONG RAM the_env: This longword is the default environment string (four zeros).
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