oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
|
Post by oompa loompa on May 12, 2005 23:18:36 GMT -5
you can change it yourself, just go into profile and change your name to anything
edit: forgot to paste in the rom map
0x000000-0x0FFFFF - Kid Chameleon 0x100000-0x1FFFFF - Dr Robotnik 0x200000-0x27FFFF - Sonic 0x280000-0x2FFFFF - Golden Axe 0x300000-0x37FFFF - Altered Beast 0x380000-0x39FFFF - Flicky 0x3F0000-0x3FFFFF - Redica Menu
they could have actually added more games to the rom x.x because there's still more space for 128k games, or flicky would have to be moved higher, and a 256k can be put in, due to the scheme of the bankswitching hardware
i forgot about the test points, when i get a picture of my radica, i'll post those
|
|
|
Post by paulpsomiadis on May 13, 2005 14:22:51 GMT -5
Yah, O.K. I get it how the 'profile' works now... ...time for me to imitate Homer...DOH! Dang! So we coulda' had more games on the 1st mini Megadrive...ah well! Yup Pics would be nice! Are any of the test points some of the 'missing' cart slot wires? Just to let you know that the 'full' maskrom dump will also not run in Kega! So if you can get it to work in there...it'll work on a Genny (but it would need to be patched with an IPS file or using Gameshark codes...) Also, the menu only mini-ROM just does nothing in Kega (also comes up as unidentified in UCON unless you use the /sg parameter) It would prolly be better to get the full ROM to work on a real Genny rather than the mini-ROM...whatever!
|
|
Fonzie
Moldy Popcorn
h?h
Posts: 31
|
Post by Fonzie on May 13, 2005 15:54:07 GMT -5
"he menu dump portion of the rom can be found here" -Crap color conversion -No palette fade in/out -Only 16 colors really used on selection screen -No animation of any kind Well, those peoples @ radica are really bad guys... Thats nearly a shame =P
|
|
|
Post by paulpsomiadis on May 15, 2005 7:24:43 GMT -5
Hallo @oompaloompa! ;D Yeah, I know I posted about this before...but... ...even though I corrected how my name is 'displayed' in the forums...I STILL have to login using the incorrect 'typo' version that I created my account with...(the 'di' near the end of my name has to be backwards like 'id'...GRR!) I know it's my own stupid fault, but I can't seem to change my login name...only the way it's displayed in the forum! I know it's a pain in the A$$, but as you're the admin, could you fix my account PLEASE? Thanks and sorry for being a spoon!
|
|
oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
|
Post by oompa loompa on May 17, 2005 1:37:23 GMT -5
sorry, but there's no way i'll be able to change your username. you're gonna have to do it the dirty way, and create a new account with your prefered username yeah, more games =P. i believe the games included are the games that made the genesis earn its legacy, and putting smaller games that aren't "arcade legends" would have been out of the question (liek tetris or block boy). they could have put columns on though =(, i think =x 256k right? the majority are clock lines, and some other signal lines. there are no missing cart signals left =P, except for upper and lower byte writes that'll make external ram work you're right. the maskrom dump will not work on anything except the sega radica that it was meant for. if you ran it in an emu, take note of the title of the game the emu thinks it's playing. if you look at the memory map, you should see kid chameleon at this spot =D no sorry the maskrom won't work on the real genny even if the rom is patched with a few codes. don't even count on the radica menu working on a real genesis until someone finds out why the menu freezes. when this is discovered, you're still going to end up using more external ic's to make it run i'm surprised it works at all on some emus like gens =P hehe, actually it's not my intention to get the roms working on a real genny using same exact convention as the radica. all i can give you is info, and you're going to have to figure it out yourself =D if you ask me whether it is worthwhile to make a radica rom work on the real genny between buying the 6 different games, i would say to just go buy the 6 games. my arguments: 1) you have to rip the radica rom out 2) you're going to have to solder wires from the component to some blank cart you've ripped apart 3) you're going to have to make the bank switching mechanism which will take 5-6 logic ic's 4) you need to regulate the voltage supply going into the chip to 3.3 volts 5) you need to still figure out how the radica menu will work on the real genesis without freezing x.x! 6) who knows how reliable the cart will be, or how much torture the homebrew radica cartridge can take Well, those peoples @ radica are really bad guys... Thats nearly a shame =P funny stuff fonzie =P
|
|
|
Post by paulpsomiadis on May 18, 2005 5:00:20 GMT -5
B0LL0X! Ah well, I guess I'll just have to live with my crappy typo login then! True, they coulda' had columns in there! Hmm...clock lines! Maybe some O.C.-ing is in the mix then! Heh, maybe the only reason the menu ROM works on Gens is that its not as accurate as Kega! ;D 1) Done it! ;D 2) Done it! ;D 3) Maybe, but it could just be hacked for now using switches... 4) Not Necessary - I've had the Radica ROM wired into a Genny cart so I could test it in a REAL Genny (freezes as expected). It still works in the modded Radica of course! Remember that the VCC in a Genny is 5V approx, so the Radica ROM must be able to take normal ROM voltages! 5) Yup, but who cares about the menu really! 6) A LOT - I had one of the JAP Radica machines and must have soldered stuff onto the ROM about seven or eight times with a 12W iron...I eventually rebuilt the JAP Radica for collection sake and the ROM still works after all that punishment! ;D Food for thought!
|
|
oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
|
Post by oompa loompa on May 19, 2005 14:54:39 GMT -5
haha, i wouldn't run a part that is rated for 3.3 volts on a 5 volt supply. i dunno, the rom may take it, but i wouldn't chance it anyways, since i have plenty of fixed 3.3v linear regulators =P
oh, and getting write enable signals from the radica isn't going to work anymore, so all hope for saving games like landstalker's gone =D. however, when writing to the bus, the data gets outputed (a word?), so there may be some hope
i've been testing a lot of games on the radica. not planning to make a "working" and "broken" list yet, since there's too many games. the only game that hasn't worked for me yet is sonic 3. some games like lotus 2 will freeze up..... sometimes, but will work at other times by constantly hitting reset. if there's any games anyone would like me to try, i'll try them
i also, when i got my $10- 4" playstation lcd, i started making a portable version of the genesis using the radica chip. i made another forum thread about the design =D
|
|
|
Post by paulpsomiadis on May 20, 2005 3:20:05 GMT -5
Yah, I suppose it'd be best to use a voltage Reg. - whatever! Err, not to press a point but : WOULD O.C.-ing THE RADICA BE POSSIBLE? (Sorry, just being SHOUTY! LOL!) Also, there's a Stereo amp on the underside of the radica mainboard - but on closer inspection it seems as if one of the input lines is 'missing' (i.e. only inputs left channel...) For people wanting to do the manual bank switch MOD, note that @oompaloompa started his numbering at A1 rather than A0, so all the numbers are shifted by -1 to correspond with the original Radica ROM pinout done by @benheckc on his page... (this also applies to the bank switching diagram where there should not be A21 and A22!) ;D ==UPDATE== Gave the manual bank switching a try on the Radica (so I could test it before adding a voltage reg.) but I can't seem to get it to work... @oompaloompa - Would it be necessary to have the other three address lines (all 6) switched as in the original banking diagram, or are just those 3 you used for the manual switching diagram required? [if the latter is true - I don't think it's gonna work that way!]
|
|
oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
|
Post by oompa loompa on May 22, 2005 15:26:25 GMT -5
i dunno. i don't think it will work because the signal coming out of the glob is an output
yea, no wonder the sound sounds crappy. the ym2612 is the hardest piece of hardware to clone in the genesis, and radica probably ommited some features on purpose. i think this is why sonic 3 doesn't work because the timing's not the same
bah, where's a link to this pinout? it doesn't make sense to have an A0 because the 68k does not have an A0 signal =P. i think they have called it A0 because they've seen all memory have an A0 and thought all memory should start with A0 0o0o0o0o. having A1 as the starting address bit makes sense for number calculations also
there's no difference if you were to use 6 dip switches instead of 3. if you want to run a game and were to have 6 dip switches, the A19-A16 switches (these are your extra 3) would be all closed for every game, providing these lines directly to your rom
i hope you didn't get confused with the different address line conventions =D, there are 3 places to get addresses mixed up: addresses from the cart, addresses on the bank switching schematic, and addresses on the rom
things to note: make sure you follow the schematic carefully, and don't hook up the resistors on the cartridge side of the dip switches because it makes the resistors useless. try to check for bridging between pins on the rom
one more thing. oe and ce might be backwards on the diagram. this will not effect playing roms, but it's something to note. i'll check it out later =P
|
|
|
Post by paulpsomiadis on May 23, 2005 4:32:43 GMT -5
Ookay, I'll shut up about O.C.-ing the Radica! ;D Bummer - crappy ym2612 clone = no Sonic 3! @benheckc did a pinout for the ROM here : - benheck.com/Data%20Downloads/RadicaCartridgeSlot.jpgAs you can see it says A0 on it! Okay, three switches it is then! Nah, there's nothing confusing about the diagrams and I wired the resistors correctly! I tested it on the Radica first to see if I could switch games without the need for a Voltage Reg. - but nothing happens (black screen!) : VERY ODD?
|
|
oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
|
Post by oompa loompa on May 24, 2005 1:06:54 GMT -5
sloppy sloppy sloppy =P, A0 should be A1, but i guess it's okay for just that diagram if the sole purpose is connecting the radica directly to a cart slot. just to follow the same conventions as the 68k, i'll always use A1
i think doing the dip switch thing is harder on the radica. there are bare traces on the bottem of the board that joins the radica rom to the radica base board, so i dunno how you're going to disconnect these pins without breaking the traces, or "bending" the board (even bending the board is unhealthy for the rom because it's on a glob, and bending the board bends the glob, which will destroy it). check the connections between the rom address line and the one on the radica base board with the dip switches off
|
|
|
Post by paulpsomiadis on May 24, 2005 6:28:50 GMT -5
Yah, O.K. - as long as the diagram works it's fine! ;D Umm...maybe I should have mentioned that I removed the parts from an old Genny cart that was DOA and soldered the ROM onto the cart. It works PERFECTLY in the Radica without the DIP switches, but as soon as they were added it was "black screen" time... Only difference is where you have CPU labelled on your 'manual bank switch' diagram, this goes to the pads on the bottom of the cart (yes, the wiring has been checked and is O.K.) ;D
|
|
oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
|
Post by oompa loompa on May 27, 2005 13:00:45 GMT -5
mmmm, do it either way, and the switches should work. i dunno why it's not working for you, i don't think it's not a very complicated modification and it's easily understandable as to why the modification is hooked up the way it is. worked for me the first time (well i had to play around with turning switches on and off)
|
|