Having issues emulating my game.

[Having issues emulating my game.]

On 6/12/2019 at 11:16 PM, willymanilly said:

I doubt it's the emulator. Sounds like the compiled code is hitting one of the 6502 JAM instructions which effectively kills the cpu from fetching new instructions. http://forum.6502.org/viewtopic.php?f=1&t=1409&view=previous

 

The only way to restore the cpu to a valid state once it's jammed on real hardware is sending a reset signal to the cpu. The error message you are seeing is alerting you to the fact the cpu has attempted to execute one of the JAM instructions and is now in an unresponsive state.

 

VICE actually has test programs to ensure once a JAM instruction is executed the cpu indeed remains frozen. These test programs show that jam instructions can be compiled with no issues. https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/CPU/cpujam/

And how do I fix the issue with these programs?

[Having Syntax Issue]

2 minutes ago, Random Terrain said:

What's that stuff after bank 2?

 

I copied some code from a mini kernel leaving that behind because I couldn't figure out how to use a mini kernel. That was the problem. Thx!

[Having Syntax Issue]

I'm having a syntax error and I cant figure out whats wrong.

Heres the code:

 rem Generated 6/29/2019 7:26:11 PM by Visual bB Version 1.0.0.568
 rem **********************************
 rem *<filename>                      *
 rem *<description>                   *
 rem *<author>                        *
 rem *<contact info>                  *
 rem *<license>                       *
 rem **********************************

 

 set romsize 16k

 dim gamenumber=a

 dim swdebounce=b

 const scorefade=1

 scorecolor=$1a

 swdebounce=0
 gamenumber=1

titlepage
 gosub titledrawscreen bank2
 if gamenumber=1+switchreset then goto gamestart1
 if !switchselect then swdebounce=0
 if swdebounce>0  then swdebounce=swdebounce-1: goto titlepage
 if switchselect then swdebounce=30: gamenumber=gamenumber+1
 if gamenumber=7 then gamenumber=1
 goto titlepage

gamestart1

 playfield:
 ................................
 ............XX.XX.XX............
 ....XXX.XXX.XX.XX.XX.XXX.XXX....
 ....X.X..X..XX.XX.XX.X.X..X.....
 ....XXX..X..XX.XX.XX.XXX..X.....
 ....X.X..X..XX.XX.XX.XX...X.....
 ....X.X..X..XX.XX.XX.X.X.XXX....
 ...........XX..XX..XX...........
 ..........XX...XX...XX..........
 .........XX....XX....XX.........
 ................................
end

 COLUBK = $08
 COLUPF = $46

draw_loop
 drawscreen
 goto draw_loop



 bank 2
 asm
 incl

Does anyone notice whats wrong?

[Are Sega genesis controllers compatible with the Atari flashback 9?]

Im not sure If original Sega genesis controllers work. Same goes for 3rd party joysticks. Id be disappointed if they arent compatible.

[Having issues emulating my game.]

You might have to post the code for specific solutions.

I’m pretty sure it’s not the code thats the issue. It’s likely either the emulator or the bin file. I had no issues compiling it.

[Having issues emulating my game.]

I'm trying to make a home console port of Space Race using visual batari basic. (Its my first time coding a game). I'm coding my game. Everything is going fine, but when I compile and then attempt to test the game with Stella, an error message appears in Stella.

 

Fatal Error

Invalid Instruction.

 

So I tried it with Z26. But when I compile and open the game, instead of opening the game, it opens to a black screen with the word jammed at the bottom.

Please help me. I looked everywhere but I haven't found a way to fix this.