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perfect6502, a MOS 6502 CPU emulator that performs a simulation of the original NMOS 6502 netlist
b2cce88620
Optimizations: 1. When a transistor is turned on, only add one of the nodes it controls to listout, otherwise group calculation would be done twice for this group. This simplifies recalcNodeList(). (This required the following change: Instead of adding the nodes that control transistors that have changed to listout, put the nodes that are switched by transistors on listout.) 2. The group value is calculated while collecting nodes, and the enum group_contains_value makes sure we don't check for weaker value indicators than have already been established. 3. listout is now a set, no node will be visited twice for group calculation, within one interation. 4. When setting input pins of the package to a value, only recalc the node if it actually changes. 5. Toggling a transistor is done by assigning it the group value instead of the inverse of its value. Cleanup: * Merge the concept of listin with the concept of nodes that change from the outside and trigger a recalc. |
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| .gitattributes | ||
| .gitignore | ||
| apple1basic.bin | ||
| apple1basic.c | ||
| broken_transistors.c | ||
| cbmbasic.bin | ||
| cbmbasic.c | ||
| compare.c | ||
| console.c | ||
| console.h | ||
| emu.c | ||
| glue.h | ||
| Makefile | ||
| Makefile.apple1basic | ||
| measure.c | ||
| nodenames.h | ||
| perfect6502.c | ||
| perfect6502.h | ||
| plugin.c | ||
| plugin.h | ||
| readdir.c | ||
| readdir.h | ||
| runtime_init.c | ||
| runtime_init.h | ||
| runtime.c | ||
| runtime.h | ||
| segdefs.h | ||
| stat.h | ||
| transdefs.h | ||