| /* %%%%%%%%%%%%%%%%%%%% (c) William Landi 1991 %%%%%%%%%%%%%%%%%%%%%%%%%%%% */ |
| /* Permission to use this code is granted as long as the copyright */ |
| /* notice remains in place. */ |
| /* =============================== format.h ================================ */ |
| /* Returns the registers associtiated with a FORMAT2 instruction (handles */ |
| /* BITS 8-15) and the Address or value associated with a FORMAT3/FORMAT4 */ |
| /* instruction (handles BITS 6-23 or BITS 6-31). */ |
| |
| |
| /* ------------------------------ FORMAT2 ---------------------------------- */ |
| /* 2 parameters: */ |
| /* 1) int *REG1; See bellow */ |
| /* 2) int *REG2; See bellow */ |
| /* Handles bits 8-15 of format 2 instruction. Puts bits 8-11 in REG1, bits */ |
| /* 12-15 in REG2 and updates PC. */ |
| extern int FORMAT2(); |
| |
| /* ----------------------------- FORMAT3_4 --------------------------------- */ |
| /* 2 parameters: */ |
| /* 1) int DEMAND; Do you want the VALUE_1 or ADDRESS_1? */ |
| /* 2) int BYTES; If want a value, how many bytes do you */ |
| /* need? */ |
| /* Handles bits 6-23 for format 3 instructions, and bits 5-31 for format 4 */ |
| /* instructions. Updates PC and returns ADDRESS or VALUE of the operand */ |
| /* Depending on demand. */ |
| extern int FORMAT3_4(); |
