6502/v6502cpp
1
0
Fork 0
mirror of https://github.com/cmosher01/v6502cpp.git synced 2024-10-31 16:05:31 +00:00
Code Issues Projects Releases Wiki Activity

added comments

Browse Source
This commit is contained in:
Christopher Mosher 2013-12-04 16:32:20 -05:00
parent 062940e903
commit 81f6fce895
1 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
cpu.cpp
View File

@ -490,6 +490,10 @@ void CPU::addToGroup(int iSeg, std::set<int>& riSeg) {
* For every ON transistor this seg is connected to via a leg (source or
* drain), add the seg that's connected to the OTHER leg of the transistor.
* This is a RECURSIVE addition.
*
* Also note that, upon system startup, all transistors are initialized
* to OFF, so at the time of the very first recalcAll call, *no* other
* segments will be added here.
*/
const seg& s = segs[iSeg];
for (std::vector<int>::const_iterator iTrn = s.c1c2s.begin(); iTrn != s.c1c2s.end(); ++iTrn) {
@ -504,6 +508,11 @@ void CPU::addToGroup(int iSeg, std::set<int>& riSeg) {
}
}
/*
* Upon system startup, this will return the "pullup" value of
* each segment (except for VCC and VSS (which will of course be
* ON and OFF respectively).
*/
bool CPU::getGroupValue(const std::set<int>& riSeg) {
/* If group contains ground, it's OFF, */
if (riSeg.find(VSS) != riSeg.end()) {