Mercurial > repos > blastem
view analyze_olp.py @ 555:5af986d2b9da
Start work on refactoring some of the backend code to allow more sharing between M68K and Z80 cores and possibly also between x86 and the ARM backend when it exists
author | Michael Pavone <pavone@retrodev.com> |
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date | Mon, 24 Feb 2014 00:39:02 -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)