Phaeron opublikował specjalną wersję swojego emulatora Altirra, wzbogaconą o emulację rozszerzenia Sebastiana Bartkowicza (aka Candle...) Ultimate 1mb. W VI pojawiła się też opcja flaszowania(???) układu A29040. Więcej informacji - AtariAge.
![[ATARI] Altirra 2.20 Test VI](www/picphoto/19a443df1.jpg)
Genesis (Datasoft Inc., 1983)
Altirra 2.20 test 6 [September 25, 2012]:.
features added
- Debugger: Added .pbi and .ultimate1mb commands.
- Ultimate1MB emulation support.
bugs fixed
- Debugger: Fixed 'value' operator returning incorrect value when used in a range write breakpoint conditional expression.
- Flash: Multiple sector erase commands are now supported.
Author's Comment:
- There appears to be a timing problem that can occasionally cause flashing to fail. This is due to the flasher taking too long to issue multiple sector erase commands and exceeding the 50 microsecond window in the spec, which Altirra currently strictly enforces. When this happens, the flash erase will hang. I haven't gotten word back on whether this has been happening in the wild.
- Also, if you are running a PBI-enabled U1MB BIOS, make sure PBI support is turned off before you attempt to reflash the BIOS. I have seen a problem under emulation where the flasher will erase the part of the flash that contains the PBI routines and then attempt to read from disk, resulting in a crash when the OS tries to invoke the nuked PBI code during the programming phase. Fortunately, bricking an emulator is not hard to recover from.
wstecz25/09/2012 16:24
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.