folkert/KEK
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 1

for now, no bus error if nothing is listening to a write/read memory address

Browse source
This commit is contained in:
folkert van heusden 2022-03-17 17:36:19 +01:00
parent 15dc1697c9
commit c9ed7cfd7b
1 changed files with 3 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
bus.cpp
View file

@ -50,6 +50,7 @@ void bus::clearmem()
uint16_t bus::read(const uint16_t a, const bool word_mode, const bool use_prev) uint16_t bus::read(const uint16_t a, const bool word_mode, const bool use_prev)
{ {
// fprintf(stderr, "read [%d] from %06o [%d]\n", word_mode, a, use_prev);
uint16_t temp = 0; uint16_t temp = 0;
if (a >= 0160000) { if (a >= 0160000) {
@ -264,6 +265,7 @@ uint16_t bus::read(const uint16_t a, const bool word_mode, const bool use_prev)
uint16_t bus::write(const uint16_t a, const bool word_mode, uint16_t value, const bool use_prev) uint16_t bus::write(const uint16_t a, const bool word_mode, uint16_t value, const bool use_prev)
{ {
// fprintf(stderr, "write [%d] %06o to %06o\n", word_mode, value, a);
//D(fprintf(stderr, "write bus %o(%d): %o\n", a, word_mode, value);) //D(fprintf(stderr, "write bus %o(%d): %o\n", a, word_mode, value);)
if (a >= 0160000) { if (a >= 0160000) {
@ -440,7 +442,7 @@ uint16_t bus::write(const uint16_t a, const bool word_mode, uint16_t value, cons
D(fprintf(stderr, "bus::writeWord: odd address UNHANDLED\n");) D(fprintf(stderr, "bus::writeWord: odd address UNHANDLED\n");)
D(fprintf(stderr, "UNHANDLED write %o(%c): %o\n", a, word_mode ? 'B' : ' ', value);) D(fprintf(stderr, "UNHANDLED write %o(%c): %o\n", a, word_mode ? 'B' : ' ', value);)
c -> busError(); // c -> busError();
return value; return value;
} }