Mercurial > repos > blastem
view analyze_olp.py @ 505:b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
author | Michael Pavone <pavone@retrodev.com> |
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date | Mon, 06 Jan 2014 22:54:05 -0800 |
parents | be9c7b3e25ee |
children | b290343e5664 |
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#!/usr/bin/env python from zipfile import ZipFile from sys import exit, argv def detect_rise(last, sample, bit): mask = 1 << bit return (not last & mask) and (sample & mask) def detect_fall(last, sample, bit): mask = 1 << bit return (last & mask) and (not sample & mask) def detect_high(sample, bit): mask = 1 << bit return sample & mask def detect_low(sample, bit): mask = 1 << bit return not sample & mask def analyze_delays(chanmap, datafile): m68k_clk = chanmap['M68K CLK'] m_as = chanmap['!AS'] last = False clks = 0 as_start = 0 for line in datafile.readlines(): line = line.strip() if line and not line.startswith(';'): sample,_,num = line.partition('@') sample = int(sample, 16) if not (last is False): if detect_rise(last, sample, m68k_clk): clks = clks + 1 if detect_rise(last, sample, m_as): as_clks = clks - as_start if as_clks > 2: print '!AS held for', as_clks, 'cycles starting (delay of ' + str(as_clks - 2) + ') at', as_start, 'and ending at', clks elif detect_fall(last, sample, m_as): as_start = clks last = sample def main(args): if len(args) < 2: print 'Usage: analyze_olp.py filename' exit(1) olpfile = ZipFile(args[1], "r") channelfile = olpfile.open('channel.labels') channels = [line.strip() for line in channelfile.readlines()] channelfile.close() chanmap = {} for i in xrange(0, len(channels)): chanmap[channels[i]] = i datafile = olpfile.open('data.ols') analyze_delays(chanmap, datafile) if __name__ == '__main__': main(argv)