Tempo Jr GG2SMS - Hacks

Version	Date	By	IPS download	Size
1.0	24 Apr 2014	Vingazole	TempoJr-GG-GG2SMS-1.0.zip	1KB

Discuss this

There is a forum topic for Tempo Jr GG2SMS

What I did on this conversion :

- accesses to the GG ports removed

- GG [Start] button replaced by the SMS [Pause] button in game and by [1] in the title screen

- Button [1] replaced by [2] in the cheat codes (the Hit & Hit Game doesn't work anymore for some reason that I don't understand !?)

- VDP's "left column blank" feature activated

- player and bosses life bars moved respectively to the top left and the top right corners of the screen

- GG palettes automatically converted to the SMS palettes format

The palette conversion is done on the fly while the palette in RAM is sent to VRAM, by only keeping the two most significant bits of each colour composant (red, green, blue) from the GG colour format :

convert_GG_palette: ld b,$20 ; hl = GG_pal_address, c = VDP_DATA ($BE)

c_GG_pal_loop: ld a,(hl) inc hl srl a ; RLAs should be faster ? srl a and %00110011 ld d,a srl a srl a or d and %00001111 ld d,a

ld a,(hl) inc hl and %00001100 add a,a add a,a or d out (c),a djnz c_GG_pal_loop

ret

All Versions

file name	size (bytes)
total 1 file	1.1K
TempoJr-GG-GG2SMS-1.0.zip	1.1K

Help

How to use BPS and IPS patch files

See the main page for Tempo Jr. (テンポ JR.)
Return to the hacks index