Mercurial > repos > blastem
annotate analyze_olp.py @ 620:9d6fed6501ba
Fix handling of code writes for Z80 core. This seems to get things close to being back to where they were before the big refactor that broke the Z80 core. Some problems remain. Notably the sound driver in Sonic 2 is still quite broken.
author | Michael Pavone <pavone@retrodev.com> |
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date | Mon, 29 Dec 2014 23:08:39 -0800 |
parents | be9c7b3e25ee |
children | b290343e5664 |
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1 #!/usr/bin/env python |
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2 |
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3 from zipfile import ZipFile |
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4 from sys import exit, argv |
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5 |
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6 def detect_rise(last, sample, bit): |
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7 mask = 1 << bit |
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8 return (not last & mask) and (sample & mask) |
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9 |
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10 def detect_fall(last, sample, bit): |
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11 mask = 1 << bit |
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12 return (last & mask) and (not sample & mask) |
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13 |
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14 def detect_high(sample, bit): |
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15 mask = 1 << bit |
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16 return sample & mask |
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17 |
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18 def detect_low(sample, bit): |
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19 mask = 1 << bit |
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20 return not sample & mask |
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21 |
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22 def analyze_delays(chanmap, datafile): |
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23 m68k_clk = chanmap['M68K CLK'] |
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24 m_as = chanmap['!AS'] |
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25 last = False |
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26 clks = 0 |
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27 as_start = 0 |
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28 for line in datafile.readlines(): |
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29 line = line.strip() |
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30 if line and not line.startswith(';'): |
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31 sample,_,num = line.partition('@') |
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32 sample = int(sample, 16) |
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33 if not (last is False): |
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34 if detect_rise(last, sample, m68k_clk): |
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35 clks = clks + 1 |
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36 if detect_rise(last, sample, m_as): |
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37 as_clks = clks - as_start |
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38 if as_clks > 2: |
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39 print '!AS held for', as_clks, 'cycles starting (delay of ' + str(as_clks - 2) + ') at', as_start, 'and ending at', clks |
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40 elif detect_fall(last, sample, m_as): |
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41 as_start = clks |
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42 last = sample |
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43 |
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44 def main(args): |
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45 if len(args) < 2: |
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46 print 'Usage: analyze_olp.py filename' |
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47 exit(1) |
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48 olpfile = ZipFile(args[1], "r") |
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49 channelfile = olpfile.open('channel.labels') |
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50 channels = [line.strip() for line in channelfile.readlines()] |
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51 channelfile.close() |
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52 chanmap = {} |
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53 for i in xrange(0, len(channels)): |
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54 chanmap[channels[i]] = i |
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55 datafile = olpfile.open('data.ols') |
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56 analyze_delays(chanmap, datafile) |
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57 |
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58 |
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59 if __name__ == '__main__': |
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60 main(argv) |