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speedup

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This commit is contained in:
Michael Steil 2010-09-22 17:37:35 +00:00
parent 966ad8c535
commit bbe8c76720
1 changed files with 12 additions and 21 deletions
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33
perfect6502.c
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@ -26,15 +26,17 @@ uint8_t code[] = { 0xa9, 0x00, 0x20, 0x10, 0x00, 0x4c, 0x02, 0x00,
0xe8, 0x88, 0xe6, 0x40, 0x38, 0x69, 0x02, 0x60 };
enum {
STATE_UNDEFINED,
STATE_GND,
STATE_VCC,
STATE_FL,
STATE_PU,
STATE_FH,
STATE_GND,
STATE_FL,
STATE_PD,
STATE_PU
STATE_UNDEFINED,
};
#define MAX_HIGH STATE_FH /* VCC, PU and FH are considered high */
#define NODES 1725
#define TRANSISTORS 3510
@ -224,18 +226,12 @@ floatnode(int nn)
#ifdef DEBUG
printf("%s nn=%d\n", __func__, nn);
#endif
if (nn == ngnd)
if (nn == ngnd || nn == npwr)
return;
if (nn == npwr)
return;
node_t n = nodes[nn];
if (n.state == STATE_GND)
int state = nodes[nn].state;
if (state == STATE_GND || state == STATE_PD)
nodes[nn].state = STATE_FL;
if (n.state == STATE_PD)
nodes[nn].state = STATE_FL;
if (n.state == STATE_VCC)
nodes[nn].state = STATE_FH;
if (n.state == STATE_PU)
if (state == STATE_VCC || state == STATE_PU)
nodes[nn].state = STATE_FH;
#ifdef DEBUG
printf("%s %i to state %d\n", __func__, nn, n.state);
@ -247,14 +243,9 @@ isNodeHigh(int nn)
{
#ifdef DEBUG
printf("%s nn=%d state=%d\n", __func__, nn, nodes[nn].state);
printf("%s nn=%d res=%d\n", __func__, nn, (nodes[nn].state == STATE_VCC) ||
(nodes[nn].state == STATE_PU) ||
(nodes[nn].state == STATE_FH));
printf("%s nn=%d res=%d\n", __func__, nn, nodes[nn].state <= MAX_HIGH);
#endif
//printf("%s nn=%d res=%d\n", __func__, nn, nodes[nn].state);
return ((nodes[nn].state == STATE_VCC) ||
(nodes[nn].state == STATE_PU) ||
(nodes[nn].state == STATE_FH));
return nodes[nn].state <= MAX_HIGH;
}
void