Dla tych, którzy jeszcze nie przystąpili do testowania finalnej wersji Altirry 2.30, kolejna wersja testowa;). Ot, taka mała niespodzianka;). Jak widać, trochę zmian
![[ATARI] Altirra 2.40 Test I](www/picphoto/19a443df1.jpg)
Z serii gier "prawie"... Prawie jak BOMB JACK - Little Devil (Red Rat Software, 1988)
Altirra 2.40 test 1 [15.05.2013]
features added
- Audio: Added drive sound volume level option.
- Debugger: Added .dmabuf command.
- LLE: Added PBI device interrupt support.
- UI: Added on-screen indicators for console buttons held on startup.
bugs fixed
- ANTIC: Disabling playfield DMA after playfield start now reads bus data into the line buffer.
- ANTIC: Abnormal playfield DMA is now emulated.
- ANTIC: Improved precision of CHACTL changes.
- IDE: Fixed value of Sector Count register after READ SECTOR and WRITE SECTOR commands.
author's comment:
- I can now also fully reveal what I've been working on behind the scenes, which is support for emulating abnormal playfield DMA.Which, as I hinted at in the previous thread, you can test in 2.40 test-1 or on real hardware by typing the following in BASIC: POKE 39974,18:POKE 39975,8:POKE 54276,15
Emulating of abnormal playfield DMA in Altirra
wstecz15/05/2013 23:26
I had access to a number of 8-bit computers in my childhood, but my most favorite was the Atari 800, a 1.79MHz 6502-based computer with color graphics and a disk drive, and which as the predecessor to the Amiga, another favorite of mine. Over a decade later, I was struck by both nostalgia and ambition and started to write a new 8-bit Atari emulator from scratch. This is the result.
At this point, I've learned a lot more about the Atari and Altirra now emulates more than I ever had or did years ago, but I still work on it periodically. It also serves as a modularity test for the VirtualDub code base, from which Altirra shares some components. If you are struck by nostalgia too or have a desire to do some Atari development, perhaps it might be useful to you, too.