Denial

hi everyone, for my current project it would be nice to have multi joystick support for 2 players. i have the protovision 4 player interface here. so it is my prefered device to solve this wish. in the description there is no compatibility with the vic-20 mentioned but "hope dies last!" :P...

ahhh thx.

so that means, it is not possible to have "direct access" to the X/Y registers

hi folks, i 've read in the programmer's reference guide that the registers $030c-$030e are the satorage areas for .A, .X, .Y registers. Unbenannt.png my first understanding was that i have direct access to the a,x,y registers but a ldx #$01 does not store the value 1 in $030d. the same (not) for ld...

pirates.png I've always wanted to try out custom and rom characters in a mixed mode :wink: *=$1001 !byte $0b,$08, $e2,$07, $9e, $20, $34, $36, $30, $32, $00,$00, $00 *=$11fa ; char pointer to $1c00 / screen to $100 / screen color to $9400 lda $9002 and #%01111111 sta $9002 lda #%11001111 sta $9005 ...

For the best placement i've used a single character star, a horizontal halfed and a vertical halfed star. These are the custom characters.

europe.png not really one country 8) *=$1001 !byte $0b,$08, $e2,$07, $9e, $20, $34, $31, $31, $30, $00,$00, $00 screen=$1e49 color=$9649 ; --------- init ----------- lda #$fe ; custom char har at $1800 sta $9005 lda #147 jsr $ffd2 ;cpy char rom ldx #1 ldy #0 .rom_char lda $8000,y .cust_char sta $18...

nice grafics, sound and the gameplay is also really good.
i like it.

.. and it is for an unexpanded machine !!

is it a port of an existing game or your own idea?

more from that, pls

aitsch

hi tokra, thanks for your answer. i'm programming in 6502-assembly for more or less 1 year. so i am a rookie in coding the vic. i've heard from this sprite api but it is very complex and not so easy to understand. for this api an ram extension of 8kb is recommended. the level here is very high but i...

thanks for your answers. now i know there is no spuky and magic trick outside to overlap characters. what i already knew is, that there are no hardware sprites in VIC-I chip but thanks for reminding :wink: i've played around with ORA to overlap a moving character with background grafics, inspired of...

one of the most frustrating fact for me when i programming games for the vic-20 is that there seems to be no possibility to overlap the grafics (characters). today i've looked some youtube videos about "new" games for vics and it seems that some titles make these overlaps of their characte...

Title : SQUADRON Requirements : PAL/NTSC VIC20 (unexpanded), Joystick, Tape drive or Floppy Author : Henner Kessler Code : Assembly Released : 09.04.2020 Genre : Shooter Supplementary note : This game doesn't work with an plugged-in RAM expansion Description : https://youtu.be/LfeP7CxvGXM try to sh...

done!

many thanks to srowe

aitsch

hi everyone, i've finished my current game and wrote an small english manual for it. but my english is only school english, so my manual has some gramma and syntax issues and maybe sounds like written from a 13 year old teen. could someone with first lanuage "english" be so kind an proofre...

hi everyone, nice to see, that the forum is back! i'm still looking for voluntary ntsc-testers for my project. the code itself is nearly complete tested by pal users and hopefully free of bugs. the only things to test are the screen dimensions and the general base functions. please pm me if you are ...

Mike wrote: ↑Sun Mar 15, 2020 2:24 pm ...

Most probably, the simplest way to achieve this is to call the KERNAL reset routine at $FD22.

hehe ... this is exactly what i'am doing at the end.