Mercurial > repos > blastem
view analyze_olp.py @ 724:2174f92c5f9b
Fix bug in vdp_next_hint that was causing HINTs to fire repeatedly when they should not have fired at all based on an HINT interval that was larger than the number of active lines in the display
author | Michael Pavone <pavone@retrodev.com> |
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date | Fri, 22 May 2015 18:38:44 -0700 |
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)