diff options
| author | Eric Anholt <eric@anholt.net> | 2007-10-19 15:04:10 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2007-10-19 15:04:10 -0700 |
| commit | 78e251db671e21bc859c9b505d391b70babee2dc (patch) | |
| tree | 60b751f582ab56a176975554c4067828482c9cf1 | |
| parent | 9f9b888525b274036d301d6e06351583d0415f9e (diff) | |
In the clock graph, draw the VCO as erasures in the lines representing clocks.
This shows one of the reasons for the gaps: with the other settings, the VCO
is too low inside the gap. However, it also points out another issue: we
aren't using the high end of the VCO range due to some other limits being hit.
| -rw-r--r-- | src/scripts/clock-graph.5c | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/src/scripts/clock-graph.5c b/src/scripts/clock-graph.5c index 98500e1e..e39e559c 100644 --- a/src/scripts/clock-graph.5c +++ b/src/scripts/clock-graph.5c @@ -4,12 +4,14 @@ library "examples/sort.5c"; import Sort; int width = 1000, height = 200; - +int min_vco = 1400000000; +int max_vco = 2800000000; int min = 0xffffffff; int max = 0; int max_clocks = 1000; int[4][max_clocks] clocks; +int[4][max_clocks] vcos; int[4] clock_count = {0...}; int[4] p2vals = {5,10,7,14}; @@ -49,8 +51,7 @@ void calc_p2(int p2i) continue; if (m2 > m1) continue; /* won't happen */ - if (vco < 1400000000 || - vco > 2800000000) + if (vco < min_vco || vco > max_vco) continue; /* @@ -61,6 +62,7 @@ void calc_p2(int p2i) */ clocks[p2i][clock_count[p2i]] = clock; + vcos[p2i][clock_count[p2i]] = vco; clock_count[p2i]++; } } @@ -88,6 +90,9 @@ real scale_x(real clock) for (p2i = 0; p2i < dim(p2vals); p2i++) { int p2 = p2vals[p2i]; calc_p2(p2i); + real row_y1 = (p2i + 1) / (dim(p2vals) + 1) * height; + real row_y2 = p2i / (dim(p2vals) + 1) * height; + /*qsort(&p2vals[p2i], sort_p2);*/ switch (p2) { @@ -104,6 +109,8 @@ for (p2i = 0; p2i < dim(p2vals); p2i++) { set_source_rgb(cr, 0,0,0); break; } + + /* draw the line for the clock */ for (int i = 0; i < clock_count[p2i]; i++) { int clock = clocks[p2i][i]; real xpos; @@ -112,8 +119,27 @@ for (p2i = 0; p2i < dim(p2vals); p2i++) { continue; xpos = scale_x(clock); - move_to(cr, xpos, p2i / (dim(p2vals) + 1) * height); - line_to(cr, xpos, (p2i + 1) / (dim(p2vals) + 1) * height); + move_to(cr, xpos, row_y1); + line_to(cr, xpos, row_y2); + stroke(cr); + } + + set_source_rgb(cr, 1, 1, 1); + /* add a mark for the vco value of the clocks at each location */ + for (int i = 0; i < clock_count[p2i]; i++) { + int clock = clocks[p2i][i]; + int vco = vcos[p2i][i]; + real mark_center; + + if (clock < min_rate || clock > max_rate) + continue; + + real xpos = scale_x(clock); + real vcofrac = (vco - min_vco) / (max_vco - min_vco); + real mark_height = (row_y1 + vcofrac * (row_y2 - row_y1)); + + move_to(cr, xpos, mark_height - 1); + line_to(cr, xpos, mark_height + 1); stroke(cr); } |