Jump to content

26

SpiceWare's Blog



reboot delayed

Posted by SpiceWare, in Draconian 02 April 2017 · 369 views

Last time around cd-w made a comment that led me to doing a test rewrite of one of the ball reposition kernels:
DS_GRP0 = DS1DATADS_GRP1 = DS2DATADS_HMP0_ENAM0 = DS3DATADS_HMP1_ENAM1 = DS4DATADS_HMMB_ENABL = DS5DATA ; HMxx for missile/ball, ENABLDS_COLOR = DS6DATA ; COLUP0, COLUP1, COLUPF - only used during repositionDS_S...


resizable ball

Posted by SpiceWare, in Draconian 29 March 2017 · 234 views

Kernel revisions panned out - the ball object can now be resized and recolored.
 
The draw missile routines haven't been updated yet to use the ball as a last resort, so to test the resizing I've temporarily modified the stars to have different widths.  I also added some missiles that fly around in a formation just below the enemy formation...


starfield is back

Posted by SpiceWare, in Draconian 28 March 2017 · 188 views

The ball reposition kernels have been rewritten, the starfield has been reimplemented, and you can fly around the sectors.
 

 
ROM requires Harmony or Stella 5.0.0-pre6 or newer.



missile engine back in play

Posted by SpiceWare, in Draconian 27 March 2017 · 180 views

Both missiles are being used to draw all the objects. You can move one of them around with the joystick. Position within the world will be shown using the score as well as in the radar.
 

 
Like the sprites, I had to add an extra scanline of delay after the reposition occurred else the top scanline of the missile would disappear when it was po...


sprite engine back in play

Posted by SpiceWare, in Draconian 26 March 2017 · 176 views

Both players are being used to draw all the sprites.  At the initial position there will not be any flicker.

 
The blue test sprite can be moved around with your joystick, the score is used to show your X and Y position.  Hold fire to slow down the movement.

 
During tests I did discover a minor issue, which was most likely present...


Progress on game screen

Posted by SpiceWare, in Draconian 18 March 2017 · 235 views

Player0 and Player1 reposition kernels have been rewritten, but are not yet being tested so the test pattern goes straight down.  Still need to redo the reposition kernels for the missiles and ball.
 
The score/radar/lives/formation routines are functional.  If you change the QUADRANT and/or SECTOR in the menu the correct station layout wil...


menu's back in place

Posted by SpiceWare, in Draconian 14 March 2017 · 230 views

Joystick up/down selects menu option, joystick left/right/fire changes value.  
 
We've figured out a way to do NTSC vs PAL detection , so I've set it up so TV-TYPE will be automatically set.
 
The START option is currently overwritten to display detected console on the left, and timer value on the right.  The timer value is used for t...


reboot is underway

Posted by SpiceWare, in Draconian 09 March 2017 · 369 views

The development of Bus Stuffing took far longer than I expected. While the results are awesome:
http://atariage.com/...-1487952528.jpg
 
http://atariage.com/...-1487952532.jpg  (yes, these are actual images generated by my 2600!) regrettably some 26...


Two million pounds of ice on a subtropical island!

Posted by SpiceWare, in Houston 01 January 2017 · 266 views

My sister likes to bring my nephew and a few other kids for an extended weekend to do some holiday sightseeing in Houston. I try to find something different to do every year, and this year was no exception!
 
They got here on Saturday, the 17th, and we started them off making Melted Snowman Cookies: 
bake sugar cookies
frost them with white cook...


extra hardware!

Posted by SpiceWare, 11 December 2016 · 414 views

Received a question via Messager that I'm going to reply to here as others may find it interesting as well:
 
 
Long story short, extra hardware in the cartridge.  
 
 
Short story long, one or more of the following are added into the cartridge:
 

Extra ROM
 
When the Atari was designed ROM was expensive so they only...






Search My Blog

Recent Entries

Recent Comments

Latest Visitors

2 user(s) viewing

0 members, 2 guests, 0 anonymous users