A few pics of the Snes dev hardware that I still have yet to actually use. That whole not having an ISA slot anymore. =^_^= : Mew
cool, so you have the snasm card as well? I have something similar, but my interface box looks different: cheers for sharing! kevin
Do you know the features of it? Is it just a ROM emulator with 8M (right?) of SRAM? I see it requires a piggybacked cartridge to intercept the CIC lines, clever
It emulated the rom in RAM but also provided debugging, breakpoints code stepping. I'm not sure if it had any sram on it as I haven't messed with it and don't have the docs. The software is all dos based.
I meant the SRAM for the "emulation" RAM. I don't get how the debugging/stepping would be done on such hardware, unless the interface can give the computer current instructions @ 200/120ns (￣ω￣; since the hardware probably can't force an interrupt and stall for time. I think I have the software for the kit if anyone needs
I know sort of how the system works but i'd need to study up on in-circuit emulators before I would get the details. I'm guessing the breakpoints are just NOP instructions placed in RAM before program execution. I'm not sure if they can be updated during runtime, but i'm guessing they can since it was a scsi connection before the pc and the box. They're using the same type of idea in the current generation for the GBA kit from sn systems.
And mine is a little bit different from yours... I received some other stuff with the console interface. Anyone heard of the RAMBOY/FATBOY (marked 4M and 8Mbit system) stuff before? I seem to remember Richard Clucas's name on the pcb's....you know...the guy that designed the SuperFX chip for the SNES... pics... Shiggsy
Why would you need an in circuit emu for 68k for md? 68k was out way before MD. This looks like a normal 68k interface almost. Don't see any cart slot interface board/
I thought ice units were about 30% slower than the actual chip. You have a pic of the wondermega with ice socket?
No, but it was on the old board. Basically a normal X'Eye with a hole in the casing above a socketed 68000 (bit reminiscent of the Dune movie). I asked about it and the guy said it was for an ICE.
http://assembler.roarvgm.com/ZAX_Megadrive_DEV/mddev.jpg A cable / cart interface. Some random thoughts here. Why would they want an ICE with an interface like that? If it's anything like the sh-2 ice that means there's a really large early megadrive dev board around with a socket for ice or 68k chip. Now you mentioned the wondermega with the ice slot, but why would they have an ice socket on a product that was already in production? Really interesting stuff. Now using the ice module to fine tune and improve your cpu usage efficiency would make sense, but I wasn't aware of this being done on megadrive! That would explain the socket on the wondermega , if you're trying to squeeze more out of the cpu... But for MD the apps were pretty primitive affair, I can't see some sort of GUI cpu analysis program being done for megadrive. I know they did this to great result on psx and now ps2, but for megadrive? I know treasure had their own special setup. "now is time to set the 68000 heart on fire!"
