- #6502 EMULATOR MAC HOW TO#
- #6502 EMULATOR MAC SERIAL#
- #6502 EMULATOR MAC 32 BIT#
- #6502 EMULATOR MAC SOFTWARE#
- #6502 EMULATOR MAC CODE#
#6502 EMULATOR MAC CODE#
The code is in reasonable enough shape that I could probably post it if someone wanted to give it a try, but the big catch is that it requires the larger of the two GODILs (a $10 difference), which is unfortunately, currently out of stock. It emulates enough of a Disk II to detect what track is being accessed and when a disk read is occurring and downloads each track on-the-fly as needed into an 8K buffer. You can enter a URL at the console command prompt and it will do a DNS lookup and then connect via HTTP to the requested server.įor example, one of the first URLs I successfully booted from was: I also exposed a 6-wire SPI bus which is connected to an Arduino W5200 daugherboard, thus providing the network interface.
#6502 EMULATOR MAC SERIAL#
I've got it basically working now - I've got the GODIL FPGA board plugged into the CPU socket and it exposes a 2-wire serial port which acts as a console. If people are interested, I will follow up with updated information. you can use this to boot a real physical Apple II from a disk image hosted on a web site) Initially, I was thinking of using an SD card for backing store, but then decided it would be more flexible if I added a network interface and allowed it to boot disk images over the network. My goal then became to add a virtual Disk II interface into the FPGA code.
#6502 EMULATOR MAC HOW TO#
For me this was an opportunity to learn VHDL and teach myself how to design FPGA code.
#6502 EMULATOR MAC SOFTWARE#
I'm a software developer, and I've never done any real hardware development, certainly not working with an FPGA. And the hardware backed 6502 debugging is awesome. Really, really cool to see an Apple II boot up with the cpu removed and replaced with an FPGA. He developed the project for use with an Acorn Atom, but it simulates a real 6502 well enough that I was able to drop it into an Apple //e and have it work out of the box. The debugger is written in C, and the AVR core is the same one used in an Arduindo, so it's easy to program for.
David Banks combined a 6502 soft-core (to emulate the 6502) with an Atmel AVR soft-core (to act as a debugger) and wired them up such that the AVR can poke inside the 6502, including breakpoints, watchpoints, register reads, etc. The magic software that re-creates a 6502 is all open source. The hardware is generic and can be used for many projects. Installation is as simple as popping out the CPU and putting this board in it's place. The hardware is a small FPGA mounted on a 40-pin board that has a similar form-factor to a 6502 processor, and with the right software, can be used as a pin-compatible, plug-in replacement for a 6502. (If there are other Apple II communities where it might be more appropriate to post this, please let me know.)Ī few weeks ago, I went looking for an in-circuit emulator/debugger for my trusty old Apple II and stumbled across a project called "ICE-T65" I went looking for a good forum to post this on and found this one. Thought I would stop by and say hi! and tell you all about a project I've been working on. Just compile the source in any Ansi C compliant compiler.I'm new here. It is coded in C, and can run at about 3mhz on a 486/100. This was Neil Bradley's original 6502 emulator, used in his Asteroids emulator. Also included is a test program for the n6502 cpu emulator.
#6502 EMULATOR MAC 32 BIT#
It was coded in 32 bit assembly by Bloodlust Software, and is the fastest 6502 cpu emulator there is. This is the 6502 source code used in NESticle. It is coded in C, just compile it with any Ansi C compliant compiler. His 6502 cpu emulator was also used in other author's projects, such as fMSX, MasterGear, xNES, MAME and VPCE. This is the famous 6502 emulator from Marat Fayzullin, author of many different emulation projects, such as iNES. It will prove to be the main CPU emulator used in VB5 Emulators (It's been used in PCSloMo). This 6502 Cpu emulator was coded in Visual Basic by Don Jarrett. It is a very optimized emulator, and can run Asteroids, for example, at 9-10 times its actual speed on a P60.Ĭompile make6502.c, generate the source to M6502 by running it, and assemble with NASM 0.95+. This 6502 Cpu emulator was coded in 32 bit assembly by Neil Bradley, which was originally used in NESticle 0.2x and 0.3x, and other emulators for NES, some arcade systems and anything else that uses the 6502 cpu. It's coded in assembly, and is optimized for Pentiums. Larry Bank, author of the multi arcade emulator CAGE, coded this 6502 emulator for use with CAGE, and it is now available to the public. Run the make batch file to assemble it (make sure you have TCC and A86 in your path or in the same dir). It's not very fast, even though it's coded in assembly. Paul Robson coded this 6502 emulator to be used with some of his emulators, such as NESA.
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