- Coleco roms smurf generator#
- Coleco roms smurf software#
- Coleco roms smurf code#
- Coleco roms smurf download#
I'm not sure if I want to start emulating the MSX, as the last time I attempted to emulate a floppy disk drive (viz, the SF-7000) ended in disaster.Clear editor. It does, however, have a different sound chip (AY-3-8910). Quote:The fact that the hardware is shared between the SG-1000 and this machine explains the large body of Sega arcade ports.The MSX is also quite similar, with its Z80 CPU and TMS9918 video. This could also explain some of the cartridges I've tested not booting properly. The 1KB RAM does seem rather small (especially as some of it is stolen by the BIOS), and a number of SG-1000 cartridges I've tested don't work unless I emulate them as RAM, so I wouldn't be surprised if some ROMs had on-board RAM too. If I find another one at the fleamarket, I'll certainly snap it up for parts.That's one of the more interesting features - that it's made up out of off-the-shelf parts as opposed to custom-designed ones. Quote:Anyway, I didn't know it had discrete VRAM either (it's too old for me to feel comfortable taking it apart and probing the motherboard). Some of the ColecoVision programs I've tried don't work at all, and I'm not all that familiar with this platform, so I'd be very grateful if you pointed out any errors in my implementation! Unless they made another Smurf game, I remember the background was way chunkier.I compared it against blueMSX, and the result is the same (ignoring slightly different hard-coded colour palettes). I have the actual cartridge, so I guess I could always fire it up and check for you. I think your Smurf screenshot might actually be incorrect a bit.
Coleco roms smurf download#
You can download the latest build of Cogwheel from its website, featuring the new ColecoVision emulation.
Coleco roms smurf code#
With those differences applied, it's easy to add the few lines of code to emulate the Multicolor video mode.ĬolecoVision emulation has not been tested at all thoroughly, so chances are it doesn't work very well Multicolor emulation has been tested with precisely one game!
Coleco roms smurf generator#
RAM is 1KB instead of 8KB the sound generator uses the standard 15-bit wide shift register (instead of the 16-bit wide one used in the SMS) the video display processor interrupt output is connected to NMI rather than INT. This many keys is making my InputManager class look thoroughly idiotic, so that will certainly need a rewrite.Īpart from that, it's pretty simple. As well as the typical eight-direction joystick and two fire buttons, it added a 12-key keypad (0-9, * and #). The controllers are also quite different. The ColecoVision, however, has an 8KB BIOS ROM that offers a lot of functionality to the programmer, so this must be present to run most ColecoVision games. The Sega Master System and Sega Game Gear consoles had the option of BIOS ROMs, but all these did was very basic initialisation and header/checksum checking. This controls which of the different mappings it uses for memory and hardware I/O.Īnother difference is the presence of a BIOS ROM. To handle this case, the emulator now has a Family field, which can be set to Sega or ColecoVision. The memory map (as in, which address ranges map to which memory devices) is different, as is the I/O map (as in, the I/O ports that the various hardware components are connected to). The ColecoVision hardware is very similar to the SG-1000 in terms of what is inside the case - a Z80 CPU, TMS9918 video and SN76489 sound.
Coleco roms smurf software#
No Master System or SG-1000 software used this mode to my knowledge, which reduced the likelihood of it being supported at all (if I could't test it, how could I emulate it?) I was tipped off that some ColecoVision software made use of it, so set about emulating the ColecoVision. Each cell could be assigned a unique colour, giving you a crude bitmapped video mode. This mode broke the screen down into 4x4 pixel squares, resulting in a 64x48 grid. One notable gap in my TMS9918 (video) emulation was its "Multicolor" mode.