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bradgrantham-apple2e
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speed softswitches by binning by address

This commit is contained in:
Brad Grantham 2016-11-17 22:05:02 -08:00
parent a9f3df0320
commit 7b3fa24b2a
1 changed files with 13 additions and 7 deletions
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20
apple2e.cpp
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@ -308,6 +308,7 @@ const region io_region = {"io", 0xC000, 0x100};
struct MAINboard : board_base
{
vector<SoftSwitch*> switches;
SoftSwitch* switches_by_address[256];
SoftSwitch CXROM {"CXROM", 0xC006, 0xC007, 0xC015, false, switches, true};
SoftSwitch STORE80 {"STORE80", 0xC000, 0xC001, 0xC018, false, switches, true};
SoftSwitch RAMRD {"RAMRD", 0xC002, 0xC003, 0xC013, false, switches};
@ -418,12 +419,17 @@ struct MAINboard : board_base
backed_region* r = *it;
int firstpage = r->base / 256;
int lastpage = (r->base + r->size + 255) / 256 - 1;
printf("%04X %04X ->", r->base, r->base + r->size - 1);
for(int i = firstpage; i <= lastpage; i++) {
printf(" %02X", i);
regions_by_page[i].push_back(r);
}
printf("\n");
}
for(int i = 0; i < 256; i++)
switches_by_address[i] = NULL;
for(auto it = switches.begin(); it != switches.end(); it++) {
SoftSwitch* sw = *it;
switches_by_address[sw->clear_address] = sw;
switches_by_address[sw->set_address] = sw;
switches_by_address[sw->read_address] = sw;
}
}
@ -454,8 +460,8 @@ struct MAINboard : board_base
printf("bank switch control %04X, aborting\n", addr);
exit(1);
}
for(auto it = switches.begin(); it != switches.end(); it++) {
SoftSwitch* sw = *it;
SoftSwitch* sw = switches_by_address[addr];
if(sw != NULL) {
if(addr == sw->read_address) {
data = sw->enabled ? 0x80 : 0x00;
if(debug & DEBUG_RW) printf("Read status of %s = %02X\n", sw->name.c_str(), data);
@ -572,8 +578,8 @@ struct MAINboard : board_base
printf("bank switch control %04X, exiting\n", addr);
exit(1);
}
for(auto it = switches.begin(); it != switches.end(); it++) {
SoftSwitch* sw = *it;
SoftSwitch* sw = switches_by_address[addr];
if(sw != NULL) {
if(addr == sw->set_address) {
if(!sw->implemented) { printf("%s ; set is unimplemented\n", sw->name.c_str()); fflush(stdout); exit(0); }
data = 0xff;