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decode_6801.c
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decode_6801.c
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case 0:
/* plain text 8-bit */
for ( ; x < OP_SIZE_MAX; inz++, x++) {
if (opt_tmp->op[x] == 0 && buffer[inz] == 0x0A) {
output_assembled_opcode(opt_tmp, "d%d ", opt_tmp->hex);
i = inz;
return SUCCEEDED;
}
if (opt_tmp->op[x] != toupper((int)buffer[inz]))
break;
}
break;
case 5:
case 1:
/* 8-bit signed operand, relative address */
for ( ; x < OP_SIZE_MAX; inz++, x++) {
if (opt_tmp->op[x] == 'x') {
y = i;
i = inz;
z = input_number();
inz = i;
i = y;
if (!(z == SUCCEEDED || z == INPUT_NUMBER_ADDRESS_LABEL || z == INPUT_NUMBER_STACK))
return FAILED;
if (z == SUCCEEDED && (d > 127 || d < -128)) {
print_error("Out of signed 8-bit range.\n", ERROR_NUM);
return FAILED;
}
for (x++ ; x < OP_SIZE_MAX; inz++, x++) {
if (opt_tmp->op[x] == 0 && buffer[inz] == 0x0A) {
if (z == SUCCEEDED)
output_assembled_opcode(opt_tmp, "d%d d%d ", opt_tmp->hex, d);
else if (z == INPUT_NUMBER_ADDRESS_LABEL)
output_assembled_opcode(opt_tmp, "k%d d%d R%s ", active_file_info_last->line_current, opt_tmp->hex, label);
else {
output_assembled_opcode(opt_tmp, "d%d c%d ", opt_tmp->hex, latest_stack);
if (opt_tmp->type == 5) {
/* 5 -> let's configure the stack so that all label references inside are relative */
stacks_tmp->relative_references = 1;
}
}
i = inz;
return SUCCEEDED;
}
if (opt_tmp->op[x] != toupper((int)buffer[inz]))
break;
}
}
if (opt_tmp->op[x] != toupper((int)buffer[inz]))
break;
}
break;
case 2:
/* 16-bit operand */
for ( ; x < OP_SIZE_MAX; inz++, x++) {
if (opt_tmp->op[x] == '?') {
y = i;
i = inz;
z = input_number();
inz = i;
i = y;
if (!(z == SUCCEEDED || z == INPUT_NUMBER_ADDRESS_LABEL || z == INPUT_NUMBER_STACK))
return FAILED;
if (z == SUCCEEDED && (d > 65535 || d < -32768)) {
print_error("Out of 16-bit range.\n", ERROR_NUM);
return FAILED;
}
for (x++ ; x < OP_SIZE_MAX; inz++, x++) {
if (opt_tmp->op[x] == 0 && buffer[inz] == 0x0A) {
if (z == SUCCEEDED)
output_assembled_opcode(opt_tmp, "d%d y%d ", opt_tmp->hex, d);
else if (z == INPUT_NUMBER_ADDRESS_LABEL)
output_assembled_opcode(opt_tmp, "k%d d%d r%s ", active_file_info_last->line_current, opt_tmp->hex, label);
else
output_assembled_opcode(opt_tmp, "d%d C%d ", opt_tmp->hex, latest_stack);
i = inz;
return SUCCEEDED;
}
if (opt_tmp->op[x] != toupper((int)buffer[inz]))
break;
}
}
if (opt_tmp->op[x] != toupper((int)buffer[inz]))
break;
}
break;
case 3:
/* plain text 16-bit */
for ( ; x < OP_SIZE_MAX; inz++, x++) {
if (opt_tmp->op[x] == 0 && buffer[inz] == 0x0A) {
output_assembled_opcode(opt_tmp, "y%d ", opt_tmp->hex);
i = inz;
return SUCCEEDED;
}
if (opt_tmp->op[x] != toupper((int)buffer[inz]))
break;
}
break;
case 4:
/* 8-bit unsigned operand, absolute address */
if (xbit_size > 8 && opt_tmp->skip_8bit == 1)
break;
for ( ; x < OP_SIZE_MAX; inz++, x++) {
if (opt_tmp->op[x] == 'x') {
y = i;
i = inz;
z = input_number();
inz = i;
i = y;
if (!(z == SUCCEEDED || z == INPUT_NUMBER_ADDRESS_LABEL || z == INPUT_NUMBER_STACK))
return FAILED;
if (operand_hint == HINT_16BIT)
break;
if (z == SUCCEEDED && (d > 255 || d < 0)) {
if (opt_tmp->skip_8bit == 1)
break;
print_error("Out of 8-bit range.\n", ERROR_NUM);
return FAILED;
}
for (x++ ; x < OP_SIZE_MAX; inz++, x++) {
if (opt_tmp->op[x] == 0 && buffer[inz] == 0x0A) {
if (z == SUCCEEDED)
output_assembled_opcode(opt_tmp, "d%d d%d ", opt_tmp->hex, d);
else if (z == INPUT_NUMBER_ADDRESS_LABEL)
output_assembled_opcode(opt_tmp, "k%d d%d Q%s ", active_file_info_last->line_current, opt_tmp->hex, label);
else
output_assembled_opcode(opt_tmp, "d%d c%d ", opt_tmp->hex, latest_stack);
i = inz;
return SUCCEEDED;
}
if (opt_tmp->op[x] != toupper((int)buffer[inz]))
break;
}
}
if (opt_tmp->op[x] != toupper((int)buffer[inz]))
break;
}
break;