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twice as fast by using 16 bit nodes!

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This commit is contained in:
Michael Steil 2010-09-22 22:57:00 +00:00
parent 8aff6d4603
commit 291aaa5f2c
1 changed files with 37 additions and 35 deletions
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72
perfect6502.c
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@ -9,6 +9,8 @@ typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef int BOOL;
typedef uint16_t nodenum_t;
#define NO 0
#define YES 1
@ -44,8 +46,8 @@ typedef struct {
BOOL pullup;
BOOL pulldown;
int state;
int gates[NODES];
int c1c2s[2*NODES];
nodenum_t gates[NODES];
nodenum_t c1c2s[2*NODES];
int gatecount;
int c1c2count;
} node_t;
@ -57,9 +59,9 @@ node_t nodes[NODES];
typedef struct {
int name;
BOOL on;
int gate;
int c1;
int c2;
nodenum_t gate;
nodenum_t c1;
nodenum_t c2;
} transistor_t;
transistor_t transistors[TRANSISTORS];
@ -88,9 +90,9 @@ setupTransistors()
{
int i;
for (i = 0; i < sizeof(transdefs)/sizeof(*transdefs); i++) {
int gate = transdefs[i].gate;
int c1 = transdefs[i].c1;
int c2 = transdefs[i].c2;
nodenum_t gate = transdefs[i].gate;
nodenum_t c1 = transdefs[i].c1;
nodenum_t c2 = transdefs[i].c2;
transistors[i].name = i;
transistors[i].on = NO;
transistors[i].gate = gate;
@ -111,7 +113,7 @@ setupTransistors()
#ifdef DEBUG
void
printarray(int *array, int count)
printarray(nodenum_t *array, int count)
{
int i;
for (i = 0; i < count; i++)
@ -120,12 +122,12 @@ printarray(int *array, int count)
}
#endif
int group[NODES];
nodenum_t group[NODES];
int groupcount;
int groupbitmap[NODES/sizeof(int)];
BOOL
arrayContains(int el)
arrayContains(nodenum_t el)
{
#if 0
int i;
@ -141,7 +143,7 @@ arrayContains(int el)
}
typedef struct {
int *list;
nodenum_t *list;
int count;
char *bitmap;
} list_t;
@ -156,15 +158,15 @@ clearRecalc()
}
BOOL
recalcListContains(int el)
recalcListContains(nodenum_t el)
{
return recalc.bitmap[el];
}
void addNodeToGroup(int i);
void addNodeToGroup(nodenum_t i);
void
addNodeTransistor(int node, int t)
addNodeTransistor(nodenum_t node, int t)
{
#ifdef DEBUG
printf("%s n=%d, t=%d, group=", __func__, node, t);
@ -172,7 +174,7 @@ addNodeTransistor(int node, int t)
#endif
if (!transistors[t].on)
return;
int other;
nodenum_t other;
if (transistors[t].c1 == node)
other = transistors[t].c2;
if (transistors[t].c2 == node)
@ -181,7 +183,7 @@ addNodeTransistor(int node, int t)
}
void
addNodeToGroup(int i)
addNodeToGroup(nodenum_t i)
{
#ifdef DEBUG
printf("%s %d, group=", __func__, i);
@ -214,7 +216,7 @@ getNodeValue()
int flstate = STATE_UNDEFINED;
int i;
for (i = 0; i < groupcount; i++) {
int nn = group[i];
nodenum_t nn = group[i];
node_t n = nodes[nn];
if (n.pullup)
return STATE_PU;
@ -229,7 +231,7 @@ getNodeValue()
}
void
addRecalcNode(int nn)
addRecalcNode(nodenum_t nn)
{
#ifdef DEBUG
printf("%s nn=%d recalc.list=", __func__, nn);
@ -244,7 +246,7 @@ addRecalcNode(int nn)
}
void
floatnode(int nn)
floatnode(nodenum_t nn)
{
#ifdef DEBUG
printf("%s nn=%d\n", __func__, nn);
@ -262,7 +264,7 @@ floatnode(int nn)
}
BOOL
isNodeHigh(int nn)
isNodeHigh(nodenum_t nn)
{
#ifdef DEBUG
printf("%s nn=%d state=%d\n", __func__, nn, nodes[nn].state);
@ -292,7 +294,7 @@ recalcTransistor(int tn)
}
void
recalcNode(int node)
recalcNode(nodenum_t node)
{
#ifdef DEBUG
printf("%s node=%d, recalc.list=", __func__, node);
@ -317,15 +319,15 @@ recalcNode(int node)
}
void
recalcNodeList(int *list, int count)
recalcNodeList(nodenum_t *list, int count)
{
#ifdef DEBUG
printf("%s list=", __func__);
printarray(list, count);
#endif
int list1[NODES];
int bitmap1[NODES];
int bitmap2[NODES];
nodenum_t list1[NODES];
char bitmap1[NODES];
char bitmap2[NODES];
list_t current;
current.list = list;
@ -360,7 +362,7 @@ recalcAllNodes()
printf("%s\n", __func__);
#endif
printf("%s count=%d\n", __func__, NODES);
int list[NODES];
nodenum_t list[NODES];
int i;
for (i = 0; i < NODES; i++)
list[i] = i;
@ -368,33 +370,33 @@ recalcAllNodes()
}
void
setLow(int nn)
setLow(nodenum_t nn)
{
#ifdef DEBUG
printf("%s nn=%d\n", __func__, nn);
#endif
nodes[nn].pullup = NO;
nodes[nn].pulldown = YES;
int list[NODES];
nodenum_t list[NODES];
list[0] = nn;
recalcNodeList(list, 1);
}
void
setHigh(int nn)
setHigh(nodenum_t nn)
{
#ifdef DEBUG
printf("%s nn=%d\n", __func__, nn);
#endif
nodes[nn].pullup = YES;
nodes[nn].pulldown = NO;
int list[NODES];
nodenum_t list[NODES];
list[0] = nn;
recalcNodeList(list, 1);
}
void
setHighLow(int nn, BOOL val)
setHighLow(nodenum_t nn, BOOL val)
{
if (val)
setHigh(nn);
@ -405,11 +407,11 @@ setHighLow(int nn, BOOL val)
void
writeDataBus(uint8_t x)
{
int recalcs[NODES];
nodenum_t recalcs[NODES];
int recalcscount = 0;
int i;
for (i = 0; i < 8; i++) {
int nn;
nodenum_t nn;
switch (i) {
case 0: nn = db0; break;
case 1: nn = db1; break;
@ -793,7 +795,7 @@ initChip()
#ifdef DEBUG
printf("%s\n", __func__);
#endif
int nn;
nodenum_t nn;
for (nn = 0; nn < NODES; nn++)
nodes[nn].state = STATE_FL;
nodes[ngnd].state = STATE_GND;