| /* %%%%%%%%%%%%%%%%%%%% (c) William Landi 1991 %%%%%%%%%%%%%%%%%%%%%%%%%%%% */ |
| /* Permission to use this code is granted as long as the copyright */ |
| /* notice remains in place. */ |
| /* ============================== memory.h ================================= */ |
| /* Contains all the routines that manage the main memory of the SIC/XE */ |
| /* machine. */ |
| |
| /* MEM_SPACE The type of a main memory in this program. */ |
| typedef char *MEM_SPACE; |
| |
| /* --------------------------------- INT ---------------------------------- */ |
| /* 1 parameter: */ |
| /* 1) char CH; Character to convert. */ |
| /* Return the integer representation for a character. Had to be written */ |
| /* Because the character 255 (for example) who be treated as the integer -1, */ |
| /* but I needed it to be 255. */ |
| extern int INT(); |
| |
| /* ----------------------------- Create Memory ----------------------------- */ |
| /* 1 parameter: */ |
| /* 1) MEM_SPACE *MEMORY; name of the main memory to create. */ |
| /* Create a megabyte of memory and point MEMORY to it. It does not initialize*/ |
| /* the memory as this took about 5 minuites. Since the memory was */ |
| /* uninitized I needed another way to know when locations where modified, */ |
| /* thus the above lined list of blocks. */ |
| extern void CREATE_MEMORY(); |
| |
| /* ------------------------------ STORE_AT --------------------------------- */ |
| /* 5 parameters: */ |
| /* 1) char *VALUE; Character representation (2 chars/byte) of */ |
| /* what the block of memory should contain. */ |
| /* 2) int BYTES; bytes in the block to load into memory. */ |
| /* 3) int ADDRESS; Where the block begins in memory. */ |
| /* 4) MEM_SPACE MEMORY; The main memory. */ |
| /* 5) BOOLEAN *ERROR; Was an error detected during the store. */ |
| /* Place BYTES consequative bytes into MEMORY, starting at ADDRESS. */ |
| extern void STORE_AT(); |
| |
| /* ---------------------------- ADD_INT_TO_LOC ----------------------------- */ |
| /* 5 parameters: */ |
| /* 1) int NUM; NUMber to add to the value already in memory*/ |
| /* 2) int LOCATION; Address of the integer in memory */ |
| /* 3) int HALF_BYTES; How many HALF_BYTES does the number occupy */ |
| /* 4) MEM_SPACE MEMORY; The memory. */ |
| /* 5) BOOLEAN *ERROR; Has an error been detected. */ |
| /* Add the integer NUM to what is store at LOCATION in MEMORY. */ |
| extern void ADD_INT_TO_LOC(); |
| |
| /* ----------------------------- PRINT_MEM --------------------------------- */ |
| /* 2 parameters: */ |
| /* 1) MEM_SPACE MEMORY; Memory to output. */ |
| /* 2) FILE *OUTPUT; Output stream. */ |
| /* Output the loaded areas of memory in a nice user readable way. */ |
| extern void PRINT_MEM(); |
| |
| /* ---------------------------- OUTPUT_MEM --------------------------------- */ |
| /* 2 parameters: */ |
| /* 1) MEM_SPACE MEMORY; Memory to output. */ |
| /* 2) FILE *OUTPUT; Output stream. */ |
| /* Prints out the loaded areas of memory in a machine friendly format. Very */ |
| /* to the text records of the object stream except relocated and modified. */ |
| extern void OUTPUT_MEM(); |
