> On 2016-08-12, at 08:07, Gerrit Heitsch <email@example.com> wrote: > >> 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. As my rusty memory serves - there were 8371s in the earlier both A500s and A2000s. The 8375 was used in A500+ / A600 (the latter AFAIR) but not in the A2000. > 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. True - I /think/ there might have been pinout changes for 8375 but can't be sure now. Would need to check the old docs. I vaguely recall that unlike 8371 => 8372, 8375s were not a drop-in replacements for the earlier ones. -- SD! Message was sent through the cbm-hackers mailing listReceived on 2016-08-12 11:01:37
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