ChibiAkumas ASM Programming Forum

The compression algorithm here

https://www.youtube.com/watch?v=gpsvgWsTX1I

also used in this impressive zx81 hi-res demo

https://www.youtube.com/watch?v=gpsvgWsTX1I

gives on average (for an arbitrary image) better compression than RLE. It also easy to implement. It basically summarised as ...

Hello Keith,

The BBC bridge companion is a classic 8-bit console of the British Broadcasting Corporation. I own this console. It has 12 game control keys. It is the first proper games console (by that I mean it uses cartridges) to be sold in England and made in England. It has TMS9--- VDP and a Z80 ...

Hi Nephesh,

If you didn't understand Keith's explanation I will add a little more to it so maybe you can understand it. To convert a hex value to an ASCII letter first notice that in the ASCII table there is a gap, of size 7,between the two groups of characters 0 to 9 and A to F, this obviously ...

I had a read of some of documentation screen 3.

The screen three mode (as it is known in MSX BASIC) can have 16 colours on screen and each pixel in the the 68 by 48 screen can be set to any of the 16 colour without any restrictions.

The common definition of bitmap means there is a one to one ...

All right. Personally, to be frank, I would not sponsor you to do it-if that what your reply above may mean-because the reason but I am unable to do it, for now, is because I can't find any information,so far, on it on how to plot a screen 3.


I can't find any information,so far, on it on how to ...

I did my own pixel plot function for the MSX1 in screen 2 a few months ago, and I used it for that basis of lines, then 3d wireframe models, but I found it was too slow for such 3d graphics.
I came to the conclusion that coloured 3d wire frames graphics on MSX1 can be done at a good speed in MSX1 ...

Hello Keith,

This is regarding the Akusprite image conversion to MSX1 screen 2 (the 8x1 color node),
when I am doing a conversion from akusprite , so akusprite generates the exported files
.RAW and .RAW.COL, of the test image for MSX1 screen 2 in 8x1 color , the colors
are not what I expected ...

The problem I am having for completing a game is making Arkos Tracker 2 work properly
I mention the problem at the page
Video: Lesson P35 - Playing Digital Sound with WAV on the AY!

I guess the issue is CBIOS differs from the real MSX 1 BIOS in a way that makes Arkos tracker 2 fail on a real MSX 1 ...

"Unless you have some clever ideas to exploit this (like objects that move with the screen - staying in their 3rd)"

I have though about this again. I do not think you need clever ideas to do vertical scrolling if that is what you meant in your video lesson P52 (https://youtu.be/pobGYc2iPfE) you ask ...

Hello Keith,

I think there may be a bug in akusprite. So I have a 16x16 BMP test image
(imagetoconverttomsxtiles.bmp in the zip file attached) to convert to MSX 8 by 8 pixel tiles,with 8 bytes in a tile
to demonstrate the problem; thes test image is also shown as a png image in this message.
The ...