CrazyBoss

Its a bit to silent here...... Just wanna say, I am doing the final tests on a new rom, might finish it this weekend Look out for Coleco_Masters announcement

MSX2 could make scroll, doing dirty tricks, but MSX2+ could do et better MSX2 would be able to down/upscrool but left/right could be done a bit dirty, using the same way as "SET ADJUST" basic command did. To see the dif. could try to run spacemanbow on MSX2 and MSX2+ and see the dif. and yes SMG only make the CV able to come closer to MSX1 (with the MSX soundchip and 32kb ram). No improvement on VDP

usely Collectorvision use good quality PCB, so I think a Collectorvision cartrigde make as good contact with the slot-reader (inside the Colecovision) as the AtariMAX does.

I dont have the game, but could it be a problem with your SGM ? maybe faulty ram ? I am sure Collectorvision tested the game for pretty long time. Did you play other SGM games without any problems at the same hardware?

https://translate.google.com/#auto/ja/%E3%82%AC%E3%83%AB%E3%82%B1%E3%83%BC%E3%83%96 click at the speaker icon

From A hardware view it should be quicker to read code from ram, instead of a rom - any one tried it ? Will the code run a bit quicker if moved to ram and executed in Ram ? Maybe this subject only fits assembler programmers, guess its not so easy for c programmers to control code and move it around. I remember the MSX turbo-r had a mode where the roms was moved to ram, to let it execute quick enought for the R800 processor (Risc compatible z80)

I will not call those files "Disassembled" 1. It have the wrong ORG, not 0000 should be 8000 2. Data (graphics, data, tables, music-data) is shown as code. With those files you cant fix anything, even if you found the codes to correct the things how can you put it back in the code, when the files are not disassembled right. Its not an easy task and I remember i did try to Diassemble DonkeyKong (Dont remember what version), it have tables and tables in tables. So its here the fun starts, It might take a day or two to create a usable source code - after that you can start to search for the problem (bugs and missing code). I have disassembled quite a few games until now. When converting games from other platforms to ColecoVision or from ColecoVision to other platforms. I think the last one I did took around 4 days do diassemble and correct. Ok this was including family life with Kids and Wife - so could maybe be done in 2 days

how about tic-tac-toe

By the way found this information at http://map.grauw.nl/resources/msx_io_ports.php#psg The following table describes the registers of the PSG: Register(s) Description 0-5 Tone generator control 6 Noise generator control 7 Mixer control-I/O enable Important note: bit 6 must be 0, and bit 7 must be 1. Setting different values can cause damage on some systems. Safest approach is to just not touch them and read them first before writing a new value. 8-10 Amplitude control 11-13 Envelope generator control 14-15 I/O ports A & B Seems like you could do damage to the psg, if you put wrong values to reg.7 I dont know if its only at MSX or it could be the same for the SGM. I even saw MSX games, put a safety routine in there sound routine. where they check for values on reg.7 and make sure those bits are right!!!!

It make sense. But dont know what you problem, is - did you change the controller ic's ? Firebutton is bit 6 and bit 0-3 is the pattern for the keypad. I had a mainboard, where the controller didn work - i did change the controller ic's But still have problems, so god a "new" mainboard and then it worked.

missed the saturday chat (or join to late). Will next saturday be early too?

Not all homebrews are conversions

Hi There. Anybody have a wild guess, when will the number of hombrews exceed the number of original releases ? Collectorvision+Opcode+Pixelboy (mainly), I know a few other have released games for the CV too. But I think soon we will see the number of homebrews will be larger than the original number back in the 80's Any deadline/goal line

Sounds like my life - even cut a bit of sleep some times, as well using Lunch break at work while eating, still programming And daily I travel from Sweden to Denmark by boat - 2x 20mins sailing, this time is also used for programming Wife not to happy about it I guess

there is still a small bug at the SPECTRAVIDEO Tittle screen. the 'L seems to be move one byte down. Not the same level as other lettes. Spectravideo and Mass tael, used to create special letters for eg write: 'LTD so 'L is not the same as L.

actually will it work ? Is the ram area $6000-$7fff changed when enable the SMG memory? if so do a call and enable the ram will destroy the stack? or do smg actually "only" enable the memory from $2000-$5FFF ? and $6000-$7fff is the 1k build in mirrored memory?

Actually its better if the SUNDAY is earlier time and SATURDAY is the later time unless you guys have to go to church sunday

thanks guys for the chat last night , 3.00am for me how about we try to do it saturday and sunday, I think if saturday, at least people overseas would have a better chance to join. but we did after all miss Pixelboy and Nanochess - and of cause every body else who didn join the chat. Maybe see more people next time

is it now ? - seems like I am the only one online there

by the way, any videos from this years Adam con?

I think for me, 9pm-11pm (gmt+2) is good - every day But if the chat is open this sunday I will try to join even its 2-3 am here

What happend if you try to start the game without the SGM ? I would think you get a warning, said the game cant play without SGM Right?

yes you got it actually Opcode recommend NOT to enable the SGM memory if its an Adam. And since we learned that the Memory at the Adam is not mirrored ($6000-$7FFF) we can do a simple test, by writing a value to $6000 and another value to $6400, if its a ColecoVision, then the byte written to $6400 will be written to $6000 (cause of mirrored ram) Just to explain the routine. 1) We load 254 (decimal) into $6000 2) We inverts all the bits of reg. A using CPL. (Funny enough reg. A will now be 1) 3) We load Reg. A (=1) into $6400 (If its a ColecoVision the ram mirroring means that $6000 will have this Value too) 4) We read the value of $6000 into Reg. A (if its an Adam it will be 254 as we did in STEP 1, else it will be 1 cause of step 3) 5) If the Value is 254 we return the routine. 6) We out value of reg. A to port $53 to enable the SGM RAM - reg. A = 1 and return the routine. After this another routine is needed to check if the ram works, It could look like this: ld hl,$2000 ld a,(hl) inc (hl) cp (hl) jp z,xxxx ;jump to xxxx if its a Colecovision, and the ram is not enabled (maybe no SMG is plugged in, or malfunction).

Opcode mention it here: http://atariage.com/forums/topic/203851-super-game-module-technical-forum/ Not sure it changed even this information is quite old.