digress

did anyone try that sg-1000 multicart in a regular colecovision with : nothing extra installed a sgm installed f18a installed both a sgm & f18a installed and see if it works in all 4 configurations. It was designed for only a standard colecovision. The phoenix is upgraded.

sg-1000 has different memory ports for some things such as a my-card slot. The sgm and or f18a might not work with the reassigned address the cartirdge is doing to get the games to play. perhaps a vanilla phoenix colecovision core might be all that is required since the additional sgm & f18a would not be part of it. of course it might as well just make a sg-1000 core then if that was the case. I'd rather a master system core , which is already compatible with sg-1000 roms.

yes. the f18a is a clickable option . you can turn it on or off if you want to play a game like antartic adventure that benefits from the 4 sprite limit for masking the seals coming out of the holes.

fun video

enter "RUNNINGMAN" at the continue screen if you want to test f18a smooth scrolling which also uses some custom code to "TMS9900-based “GPU” processor that can execute programs in VRAM" 1 to try again 2 to exit pull down to duck fire 1 to jump fire 2 to punch

very nice, i would have included the ADAM printer too as a bludening device

I was getting some colecovision cartridges and one that was label zaxxon turned out to be an atari 2600 cartridge. but the pcb was loose and moving around in the shell. So I open it up and tried out the pcb directly. I don't recognize the game. It's not zaxxon.

got it done. definitely leaving the mini barbarian in there as a option. Might even be better.

Just for fun. Only in my personal copy. I just thought it was funny. just for fun I'll probably add in a half height original character as an option. The smaller character makes the gameplay feel different. Something like this.

I converted the sprite data from your assembler into sprites in my BG for fun. Thats pretty cool to see the source code. I might convert the tiles too.

f18a sample video and some other improvements if any wants to check out me video of it. This is running on my original colecovision with an f18a board installed.

I don't have the adam version of alcazar but supposedly you could save your progress. Which of course you could not with the cartridge version.

seems to be working for me too.

Work in progress. I'll look through your project code. It's well done. I understand most of it but it's a little above my level of programming. How much is a full copy of C++Builder 5.0?

This works wonderfully. The sound is noticeably improved. My 512kb rom works fine. f18a support in an emulator is the holy grail for me. Would make development much faster.

Will it support 512kb megacart roms?

sounds very clear. I'm surprised at the quality.

You have a Sanyo mbc 555! Now that is a great collection. My childhood computer. I still one here too.

The SGM is built into the phoenix core. I have observed graphical glitches with Bomb'n Blast & Mecha-8 when the SGM was plugged in to a standard colecovision that go away when the SGM is removed. I suspect it is not your cartridge but rather something do with this. Maybe a standard colecovision core without the SGM or f18a could correct this.

I'd be guessing. The vdp writeing any data is usually done within the nmi routine and perhaps it ran out of time which caused it to leak to an incorrect memory location. The rom on a flash cart would be loaded entirely into memory so it might access the bank switch quicker so it never comes up but the cartridge is reading from slightly slower real cartridge using bank switching. having the entire program in flash memory might just make the access to data quicker when accessing video memory writes. The video memory is the same speed in both versions but where the data is read from the rom vs the flash memory might have a variation in speed. That is just a guess.

that screen got switch to the low res 64x48 mode when that corruption shows. I've seen it happen before. The mode could just be swapped back as the game continued working.

I was playing the phoenix using the atari core last night. most games worked perfectly. Newer homebrews not so much but they are using bank switching and sometimes memory adds on like atarivox. It works really well. The colecovision + f18a + sgm side works flawlessly in every rom I tried. The atari core was a free bonus core. I think a sega master system core at some point would be a natural fit. It's a really good system. I hope they make some more someday.

That full motion video you produced for the ti dragons lair is still the peak thing i've ever seen. Pushing the hardware to max of what it could have been at the time is what makes it interesting. Easy to do some of these things on a modern game engine. I'll try it. sure. Yellow is weird looking but he does blend in with bg too much now. That's why i've mostly left the bg as black. Maybe green? also white outlines/hair really pops too.

Added some new stuff. I can complete the level now. added bridge trap added spikes room added new snake boss level fixed a bunch of stuff need to refine the spawn points of enemies here is the rumble version too if you prefer not to youtube. https://rumble.com/v1xr37i-barbarian-more-sections-completed-colecovision-homebrew.html

I suck at frogger though. I have to make games i'm good at so I have a chance in the high score competitions. I have to try again to break 10,000 points before end of day.