Description

This article is from the Apple ][ Emulator Resources Guide, by Alex Maddison with numerous contributions by others.

2.12 Old versions of YAE (Yet Another Apple ][ Emulator)

Excerpted from a message from Doug Kwan (thanks for the e-mail! - Alex):

"The name of the emulator is now YAE (Yet another Apple ][ Emulator) though the virtual machine for the XXX platform is still called apple2.XXX. Sources of the basic emulator (w/o the compiler), is now available. The file 'yae.tar.gz' is a compressed tar file containing the source codes."

From a post by Doug Kwan on "comp.emulators.apple2" (6 Aug 1994):

**************************************************************************** YAE is an Apple ][ emulator written especially for RISC based workstations running Unix with X. The Sun and SGI versions of YAE have run-time code generators tranlating on-the-fly 6502 machine code into SPARC or MIPS RISC machine code respectively. The software is currently under development and needs testers. The simple document README.apple2.sparc is available through my WWW home page. (See below) ****************************************************************************

I have just ported the run-time code generator to the MIPS architecture. As usual, I would like voluteers to try the new version of YAE for SGI workstations and give me feed back. The new SGI version has been tested on an Indigo XS 24, an Indigo XZ 4000 and a Crimson, all running IRIX 4.0.5. I would appreciate if someone test this on an Indy, a Indigo2 an Onyx or any other SGI machines other than the ones I tried. The compressed binary is available through my home page

URL http://quark.netfront.net:6502/

The non-graphics performance of YAE SGI is satisfactory. On an Indigo XZ 4000, (R4000) the effective clock speed is ~ 2.5Mhz whereas that on an Indigo XS 24 (R3000) is ~ 1.5Mhz. Graphics of YAE still needs improvement. Action games is playable on most SGI's but the speed is slower than a real Apple for very graphics extensive games. For games with medium graphics workload like Lode-runner or One-on-One. The emulator run at 90% to above 100% of a real Apple on an Indigo XZ 4000. YAE SGI also support 16KHz sampling sound emulation on most SGI's I've tested.

Since last week, I have been asked by people where to get the necessary ROM images and whether I could give them away. If you are not a regular reader of comp.emulators.apple2, get and read the FAQ list of comp.emulators.apple2. The FAQ list contains all you need to know about ROM images.

Cheers

-Doug

 

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