On 08/12/2016 12:10 AM, Christian Euler wrote: > Hi, > > Am 11.08.2016 um 22:09 schrieb email@example.com: >>> Alerts are displayed on a default PAL (or NTSC) 2-colour hires screen >>> mode. >> >> That's what I mean - what is the "default" (not set by Workbench). If >> there is no code for setting the mode to either PAL or NTSC and both >> ROM and hardware were shared between PAL and NTSC countries then how >> did it decide which mode to use for the Guru? > PAL and NTSC machines use different Agnus chips: > > 252125-01 IC 8361 AGNUS NTSC AMIGA-1000 > 252362-01 IC 8367 AGNUS PAL AMIGA-1000 > 318069-02 IC 8372 FATAGNUS AMIGA-2000 > 318069-03 IC 8375 HIRES AGNUS 2M A-3000 > 318069-10 IC 8375 R2 AGNUS HR PAL SMT A-500+/A-600 > 318069-11 IC 8375 R2 AGNUS HR NTSC SMT > 318069-16 IC 8375 R01M HR AGNUS PAL 65NS AMIGA-2000 > 318069-17 IC 8375 R01M HR AGNUS NTSC 65NS AMIGA-2000 > 318069-18 IC SM CSG 8375R0 SUP AGNUS > 318070-01 IC 8370 R3 FAT AGNUS NTSC AMIGA-500 > 318071-01 IC 8371 R1 FAT AGNUS PAL AMIGA-500 > 390544-01 IC 8375 FAT AGNUS AMIGA-500+ > 390544-02 IC 8375 AGNUS 2 MEG NTSC A500+ That list is not quite correct... The A3000 came with 8372AB or 8372B while the A2000 and A500 used the 8372A until they switched over to the 8375. It was never explained why there was a 8375, the 8372 was already ECS and could address 2 MB in the version used in the A3000. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2016-08-12 07:00:02
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