Lots of other similar hacks also become obsolete and are gone. Bitplane DMA 'overrun' condition special cases removed, it isn't needed anymore to handle overrun correctly. All of that simply work automatically now. Was previously scanline to scanline which required extra hacks to support displaying early horizontal positions in right border. Display rendering part of emulation is now from hsync to hsync. Copper free cycle check uses pipelined bitplane allocation, copper decisions are done early (2 cycles). For example bitplane/copper/sprite DMA on/off mid scanline is now fully accurate (including all side-effects) with explanation that actually makes sense. All known side-effects can be easily explained now. Bitplane logic internal pipeline is accurately emulated (DDFSTRT/limit check, BPRUN latch, sequencer output, RGA output latch = 4 cycle delay from DDFSTRT decision to first possible BPLxDAT slot). New emulation is more complex but also some previous 'lazy evaluation' optimizations might not be fully working.

(But buy a new PC if you have something like pre-Sandy Bridge era CPU). Old bug(s) reappearing (hack removed but missing edge case wasn't reimplemented properly) D3D9 shaders are not currently supported in D3D11 mode. Programmed mode (BEAMCON0 and friends) rewrite is still work in progress, some glitches might be visible. I'll write more detailed notes about internal Agnus logic later. Old versions basically used wrong origin (based on DDFSTRT immediately starting BPL DMA which was not correct). Horizontal positions shown by debugger are now shifted by 4 cycles compared to previous versions. There should be no visible differences when running 'normal' programs. Performance is slower when running custom chipset heavy programs. Bitplane sequencer, copper (mostly) and internal pipelining is rewritten to match schematics. New chipset and Voodoo 3 emulation are big enough features.)ĭisplay emulation rewrite. Better only have single version until things stabilize.īeta 18: Version bumped to 4.9. WARNING: don't use it you aren't sure, this is 'more beta' than usually.ģ2-bit only. La numérotation est également passée de v4.5.0 à v4.9.0. Une beta moins stable que d'habitude avec beaucoup de réécriture et disponible seulement en 32-bit. Ca faisait un moment qu'on n'avait pas eu une nouvelle version de cet émulateur Amiga.

Mac emulator connected to bgb