eeeck/tyvm
Archived
1
0
Fork 0
Code Activity

add str (store base+offset) register

Browse Source
This commit is contained in:
Erick
2022-02-04 02:31:40 +01:00
parent 83b3adbcdc
commit 13ea209b3f
1 changed files with 9 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tyvm.c
+9 -2
View File
@@ -59,7 +59,7 @@ enum opcodes { // [name, value]
OP_JSR, // jump register,
OP_AND, // bitwise and, 0101
OP_LDR, // load register,
OP_STR, // store register,
OP_STR, // store register, 0111
OP_RTI, // unused opcode
OP_NOT, // bitwise not, 1001
OP_LDI, // indirect load, 1010
@@ -183,7 +183,14 @@ int main(int argc, const char* argv[]) {
//{LDR};
break;
case OP_STR:
//{STR};
uint16_t sr = (instr >> 6) & 0x7;
uint16_t BaseR = (instr >> 6) & 0x7;
uint16_t offset6 = sign_extend(instr & 0x1FF, 6);
reg[sr] = mem_read(offset6 + BaseR);
update_flags(dr);
break;
case OP_NOT:
uint16_t dr = (instr >> 9) & 0x7; // destination register