Mercurial > repos > blastem
view analyze.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 | 006008a3f370 |
children |
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#!/usr/bin/env python #OLD #0 - !SE #1 - !CAS #2 - A0 #3 - A1 #------ #4 - A2 #5 - A3 #6 - A7 #7 - EDCLK #------ #8 - !HSYNC #9 - A4 #A - A5 #B - A6 #------ #C - !RAS #D - !WB/!WE #E - !DT/!OE #F - SC #NEW #0 - !IPL2 #1 - !CAS #2 - A0 #3 - A1 #------ #4 - A2 #5 - A3 #6 - A7 #7 - !HSYNC #------ #8 - !VSYNC #9 - A4 #A - A5 #B - A6 #------ #C - !RAS #D - !WB/!WE #E - !DT/!OE #F - SC #VRAM swizzling #A0 = V0 #A1 = V1 #A8 = V2 #A9 = V3 #A10 = V4 #A11 = V5 #A12 = V6 #A13 = V7 #A14 = V8 #A15 = V9 #--guesses follow-- #A2 = V10 #A3 = V11 #A4 = V12 #A5 = V13 #A6 = V14 #A7 = V15 def get_addr(sample): return ((sample >> 2) & 0xF) | ((sample >> 5) & 0x70) | ((sample << 1) & 0x80) def swizzle_addr(addr): return (addr & 0x0003) | ((addr >> 6) & 0x03FC) | ((addr << 8) & 0xFC00) def print_addr_op(addr, addr_format, mode, samplenum, triggerpos, rate): print '{0:{1}} ({2:{1}}) {3}@{4} ns'.format(swizzle_addr(addr), addr_format, addr, mode, (samplenum - triggerpos)*rate) 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 ipl2 = 0x0 cas = 0x1 ras = 0xC vsync = 0x8 hsync = 0x7 wewb = 0xD oedt = 0xE sc = 0xF last = False state = 'begin' triggerpos = 0 readcounter = 0 sillyread = 0 lastaddr = -1 edclk_ticks = 0 sc_ticks = 0 tick_start = False #f = open('street_fighter_vram_100mhz_hsync_trig_2.ols') #f = open('street_fighter_vram_50mhz_hsync_trig.ols') from sys import argv,exit if len(argv) < 2: print 'usage: analyze.py filename' exit(1) if '-b' in argv: addr_format = '016b' else: addr_format = '04X' f = open(argv[1]) for line in f: if line.startswith(';TriggerPosition'): _,_,triggerpos = line.partition(':') triggerpos = int(triggerpos.strip()) elif line.startswith(';Rate'): _,_,rate = line.partition(':') #convert to nanoseconds between samples rate = (1.0/float(rate.strip())) * 1000000000.0 elif not line.startswith(';'): sample,_,samplenum = line.partition('@') samplenum = int(samplenum.strip()) sample = int(sample, 16) if detect_rise(last, sample, sc): sc_ticks += 1 if not (last is False): #detect falling edge of !HSYNC if detect_fall(last, sample, hsync): if readcounter: print readcounter, 'reads,', sillyread, 'redundant reads' readcounter = sillyread = 0 if not tick_start is False: print 'SC:', sc_ticks, ' ticks, {0}MHz'.format(float(sc_ticks)/((rate * (samplenum-tick_start)) / 1000.0)) tick_start = samplenum edclk_ticks = sc_ticks = 0 print 'HSYNC Start @ {0} ns'.format((samplenum - triggerpos)*rate) #detect rising edge of !HSYNC elif detect_rise(last, sample, hsync): if not tick_start is False: float(edclk_ticks)/((rate * (samplenum-tick_start)) / 1000.0) print 'EDCLK:', edclk_ticks, ' ticks, {0}MHz'.format(float(edclk_ticks)/((rate * (samplenum-tick_start)) / 1000.0)) print 'SC:', sc_ticks, ' ticks, {0}MHz'.format(float(sc_ticks)/((rate * (samplenum-tick_start)) / 1000.0)) tick_start = samplenum edclk_ticks = sc_ticks = 0 print 'HSYNC End @ {0} ns'.format((samplenum - triggerpos)*rate) if detect_fall(last, sample, vsync): print 'VSYNC Start @ {0} ns'.format((samplenum - triggerpos)*rate) elif detect_rise(last, sample, vsync): print 'VSYNC End @ {0} ns'.format((samplenum - triggerpos)*rate) if detect_fall(last, sample, ipl2): print 'IPL2 Low @ {0} ns'.format((samplenum - triggerpos)*rate) elif detect_rise(last, sample, ipl2): print 'IPL2 High @ {0} ns'.format((samplenum - triggerpos)*rate) if state == 'begin': #detect falling edge of !RAS if detect_fall(last, sample, ras): state = 'ras' row = get_addr(sample) mode = 'ram' if detect_high(sample, oedt) else 'read transfer' elif detect_fall(last, sample, cas) and detect_high(sample, oedt): state = 'cas' elif state == 'ras': if detect_fall(last, sample, cas): state = 'begin' col = get_addr(sample) addr = (row << 8) | col if mode == 'ram': state = 'ras_cas' else: print_addr_op(addr, addr_format, mode, samplenum, triggerpos, rate) lastaddr = addr #print '{0:04X} {1} - {2:02X}:{3:02X} - {0:016b}'.format(addr, mode, row, col) elif state == 'cas': if detect_fall(last, sample, ras): state = 'begin' print 'refresh@{0} ns'.format((samplenum - triggerpos)*rate) elif state == 'ras_cas': if detect_fall(last, sample, oedt): readcounter += 1 if addr == lastaddr: sillyread += 1 print_addr_op(addr, addr_format, 'read', samplenum, triggerpos, rate) state = 'begin' elif detect_fall(last, sample, wewb): print_addr_op(addr, addr_format, 'write', samplenum, triggerpos, rate) state = 'begin' last = sample