Página 11 de 15

Re: Cores para Addon Jamma del ZX-Uno

Publicado: 07 Oct 2018, 15:19
por neuro_999
I tested with the 6bit dac of zxdos, and works ok.
I atach a photo of the screen. Dont show it very well, but show the shadow of the clouds.
Imagen

Enviado desde mi ONE A2003 mediante Tapatalk

Re: Cores para Addon Jamma del ZX-Uno

Publicado: 07 Oct 2018, 23:45
por grobda
I think I understand now, although dark grey is possible, clouds are rendered as solid light grey. Ideally they would be white/light grey/dark grey to be more like the original PCB, but core just assigns closest value.

so the screenshot (which I looked at when buying) is incorrect (and misleading).

Re: Cores para Addon Jamma del ZX-Uno

Publicado: 10 Oct 2018, 22:03
por Darfpga
neuro_999 escribió:I tested with the 6bit dac of zxdos, and works ok.
I atach a photo of the screen. Dont show it very well, but show the shadow of the clouds.

Just to check a little bit more :

Clouds use sprite lut (rom) set x0C which give sprite colors x30/x31/x32/x33.

green-red rgb lut gives x00/xAC/xEE/x28
blue-green rgb lut gives x00/xB5/xBD/xA5

which in turn gives :
red : x00/x16/x17/x14
green : x00/x16/x17/x14
blue : x00/x16/x17/x14

which are 3 differents shade of grey for system with 5bits per colors.

x16 = b10110
x17 = b10111
x14 = b10100

For system with 4bits per colors 1 lsb is lost => x16/x17 merge into one single color.

For system with 3bits per colors 2 lsb are lost => x16/x17/x14 merge into one single color.

Anyway neuro_999 picture seems to have only 2 colors for clouds which is strange for 6bits system.

Unfortunatly I can't get zx-uno timepilot source code to check any further.

Best regards.
Dar.

Re: Cores para Addon Jamma del ZX-Uno

Publicado: 10 Oct 2018, 23:45
por neuro_999
The source is in my git.
https://github.com/neurorulez/jammazx1/ ... /timepilot
I saw the problem. When downgrading video bits i use greater bits to pass to the dac... I will try to get lesser bits.

Btw in the 6 bit system i see all the grey shades... The problem is the photo with the mobile to the screen. :)

Enviado desde mi ONE A2003 mediante Tapatalk

Re: Cores para Addon Jamma del ZX-Uno

Publicado: 11 Oct 2018, 23:31
por Darfpga
neuro_999 escribió:The source is in my git.
https://github.com/neurorulez/jammazx1/ ... /timepilot
I saw the problem. When downgrading video bits i use greater bits to pass to the dac... I will try to get lesser bits.

Btw in the 6 bit system i see all the grey shades... The problem is the photo with the mobile to the screen. :)

Enviado desde mi ONE A2003 mediante Tapatalk
Thanks for the link to your source code.
I saw only 3 bits are used for 15khz and even only 2 bits for blue in scandoubler for 31khz (vga). You should extend to at least 5 bits if possible (required more memory for scandoubler)

Best regards
Dar.

Re: Cores para Addon Jamma del ZX-Uno

Publicado: 18 May 2019, 17:17
por neuro_999
Buenas Tardes.
Para celebrar la salida de uZX1 he metido tres cores mas para el ZX-Uno, que son.
Eggor, Zig Zag y Frenzy.

Espero que os gusten, en unos días alguno mas vendrá. :)

Re: Cores para Addon Jamma del ZX-Uno

Publicado: 19 May 2019, 00:37
por neuro_999
Incluidos también el Centipede y el Donkey Kong.
Este ultimo hay que dejar la rom en la raid de la SD (fichero DKONG.ROM) ya que es demasiado grande para meterla en el core, y la carga a SRAM al inciar.

Re: Cores para Addon Jamma del ZX-Uno

Publicado: 19 May 2019, 10:57
por brunosilva
@neuro_999

vais publicar as sources do sprint 2 modded (com cor)?

@António - vais converter os cores jamma para joy zxuno como já fizeste com muitos cores do @neuro?

Gracias

Re: Cores para Addon Jamma del ZX-Uno

Publicado: 19 May 2019, 11:39
por Vanfanel
@neuro_999: Gracias mil por el Donkey Kong y el Centipede!!! Juegacos, pero juegacos de los gordos!!! Ahora el ZX-UNO es aún, si cabe, más guay :D

Re: Cores para Addon Jamma del ZX-Uno

Publicado: 19 May 2019, 15:13
por neuro_999
brunosilva escribió:@neuro_999

vais publicar as sources do sprint 2 modded (com cor)?

@António - vais converter os cores jamma para joy zxuno como já fizeste com muitos cores do @neuro?

Gracias
He publicado los del sprint2 color mod en mi git, asi Gehstock puede pasarlo a la mist/miste.
https://github.com/neurorulez/jammazx1/ ... olor%20mod

Y todos los cores que he hecho nuevos funcionan tanto en jammazx1 como en el zx1 normal. De hecho estos últimos los he hecho pensando en el uZX1.