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nanochess

Member Since 11 Jul 2011
OFFLINE Last Active Today, 9:21 PM

Topics I've Started

Where to get TMS9918 chips?

Mon May 14, 2018 10:08 AM

Hi.

 

After some testing I think the TMS9918 chip in my first TI-99/4A is fried.

 

I would like to replace it, but I see that eBay only has Chinese suppliers for the VDP chip.

 

Experiences? Someone has eBay vendor suggestions?


Pretty printer for TMS9900 assembler source code

Wed Apr 18, 2018 11:41 AM

Hi everyone.

I've enhanced my pretty6502 formatter to allow for TMS9900 assembler source code plus xas99 directives/syntax.

It works very well with my games Astro Cube and Borzork.

Of course it could need more testing ;)

Enjoy it!

https://github.com/n...eleases/tag/0.5

Pretty printer / formatter for CP1610 assembler code

Tue Apr 17, 2018 7:23 PM

Hi all.

Today I got the idea of tinkering with pretty6502 my pretty printer / formatter for 6502 source code and I thought it would be nice to do same for CP1610 assembler code (the processor used in Intellivision)

Typically I dismiss formatting when developing a game because I want to finish fast :) so this utility really helps :)

Enjoy it!

Download URL for pretty6502 v0.4 https://github.com/n...ty6502/releases

Sample of code before formatting (from Princess Quest): (BTW the left side had Tab and space mix/match causing horizontal deviation in TextEdit but for some reason it doesn't happen here)
 
	;
	; Se prepara para secuencia de victoria
	;
        CALL secuencia_final
        MVII #victoria_1,R0
	MVII #$0218,R1
	MVII #$0c,R2
	CALL copia_pantalla
        MVII #victoria_2,R0
	MVII #$022c,R1
	MVII #$0c,R2
	CALL copia_pantalla
	MVII #300,R0
@@5:    PSHR R0
        CALL actualiza_sprites
        CALL espera_cuadro
        CALL mueve_monigotes
        PULR R0
        DECR R0
        BNE @@5
        MVII #victoria_3,R0
	MVII #$0253,R1
	MVII #$0e,R2
	CALL copia_pantalla
	MVII #500,R0
@@15:   PSHR R0
        CALL espera_cuadro
        PULR R0
        DECR R0
        BNE @@15
After pretty printing it:
 
        ;
        ; Se prepara para secuencia de victoria
        ;
        CALL    secuencia_final
        MVII    #victoria_1,R0
        MVII    #$0218,R1
        MVII    #$0c,R2
        CALL    copia_pantalla
        MVII    #victoria_2,R0
        MVII    #$022c,R1
        MVII    #$0c,R2
        CALL    copia_pantalla
        MVII    #300,R0
@@5:    PSHR    R0
        CALL    actualiza_sprites
        CALL    espera_cuadro
        CALL    mueve_monigotes
        PULR    R0
        DECR    R0
        BNE     @@5
        MVII    #victoria_3,R0
        MVII    #$0253,R1
        MVII    #$0e,R2
        CALL    copia_pantalla
        MVII    #500,R0
@@15:   PSHR    R0
        CALL    espera_cuadro
        PULR    R0
        DECR    R0
        BNE     @@15
There are several options for formatting available, trying to fit all styles ;)

My non-working TI-99/4A

Sun Apr 1, 2018 2:31 PM

Hi everyone.

 

After years of wanting a TI-99/4A, finally bite the bullet and got one from eBay.

 

The pictures looked great and the seller stated clearly that it worked, so I bought it, I typically use a carrier service to bring things from USA to Mexico, so I cannot return anything. Anyway the vendor reputation was high enough.

 

Unfortunately after receiving it and unpacking it anxiously I discovered it wouldn't show anything in my TV.

 

I thought the RF box was failing, so I went to test directly from the connector using a RCA jack, and to not avail, so I opened it and everything looks fine but there isn't any video synchro in the VDP.

 

Still the VDP isn't discarded as I need to check the oscillator and other few things.

 

But anyway, here are some pictures.

 

I've ordered also a FinalGROM99 for loading cartridge images :) it should come anyday.

 

Attached File  20180330_091853.png   3.76MB   3 downloads

Attached File  20180330_091933.jpg   757.27KB   3 downloads

Attached File  20180330_092247.jpg   955.19KB   3 downloads

Attached File  20180330_092411.png   4.22MB   3 downloads


Ultimate Soccer Gold

Sun Apr 1, 2018 8:17 AM

Hi everyone.

I've been working for months in this secret project, a soccer game for the Intellivision.

You don't need to read this wall of text, just go to the bottom and download the demo of the amazing game I've developed.

Specifications:

It includes a complete league of international teams, names of famous players (slightly changed of course), statistics, goal tables, and so on. It's very difficult to work on a full team being displayed over the Intellivision screen given the limit of 8 sprites on screen but I think I've done a superb work here.

You can choose also alignments, arbiters, stadiums, weather. I've decided to not include exact names of famous players because they could get angry, and the licenses and soo, but I've decided to try my luck and wrote to several famous players, most agents simply answered no, but one from Argentina decided my game would be interesting, and surprise! we have his original name in this game. Play to see who is ;)

With so many options the overlays are a must in this game, also during the game there is a lot of options to throw the ball, doing passes, and shots to goal. Of course the 1+9 pause feature is there.

You can choose 5 minutes per game, 10 minutes or the usual 90 minutes per game, all rules are implemented included extra timing. Better to have replacement Intellivision controllers because you could break them playing this IMHO exciting game.

Also includes managing features, you don't need to play the game but only manage the team and get sure your club doesn't broke bringing players to your team. For more realistic management, you can sign your players to do advertisements, movies, radio programs and so.

Of course we've to get also some big names from the Intellivision scene for supporting this game and paying some licenses, they are doing this in altruist and anonymous way because they are willing to support the community (the guy who likes pink ponies is there, the guy who has a van is there, US and Canada together like in a dream without fighting over who is the best in Hockey)

As you can see the objectives for this game are very very more far than even Mattel could achieve, devise or dream for its own NASL Soccer game.

Implementation:

Probably you'll not read till this point because you've found a wall of text and you didn't wanted to read, but c'mon these plans in my head were really good, and these specs sound really well to be developed before the Russia's 2018 worldcup, unfortunately because of lack of budget we had to retract in several of these features, the reality is that we got a pretty nice title screen, and we got one nicely animated player in the screen but developer fled like a girl after he saw the requirements.

So instead of a Soccer game we got a game where a soccer player runs thru field and avoids sodas thrown by public. Simple, not? but our main business man enhanced the game like a genius putting "Gold" in the title.

Anyway, we really want to sell this game, it will be expensive, limited edition, complete in box, manual and overlays, plus a reference card of famous players. The first 25 copies will have a gold sticker of early bird.

Download:

Here is the first demo, once you see it, you'll start throwing money at us, believe it or not, but of course the final opinion is up to you. The kickstarter will come soon. ;)

Enjoy it! :)

 

Attached File  mvi_0001.gif   16.12KB   15 downloads