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 ...
Search found 40 matches
- Fri Feb 19, 2021 8:10 pm
- Forum: General Z80 Programming
- Topic: Video: Lesson Aku21+22 - RLE bitmaps with AKUSprite
- Replies: 1
- Views: 13870
- Fri Feb 19, 2021 6:58 pm
- Forum: Other Z80 Systems
- Topic: BBC Bridge Companion
- Replies: 4
- Views: 16503
BBC Bridge Companion
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 ...
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 ...
- Sun Jan 17, 2021 2:07 am
- Forum: General Z80 Programming
- Topic: Another rather newbie question
- Replies: 4
- Views: 13836
Re: Another rather newbie question
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 ...
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 ...
- Sat Jan 16, 2021 5:46 am
- Forum: MSX & MSX2 Assembly Programming
- Topic: Video: Lesson P5 - Bitmap graphics on the TI-83 and MSX
- Replies: 11
- Views: 30193
Re: Video: Lesson P5 - Bitmap graphics on the TI-83 and MSX
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 ...
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 ...
- Fri Jan 08, 2021 6:39 am
- Forum: MSX & MSX2 Assembly Programming
- Topic: Video: Lesson P5 - Bitmap graphics on the TI-83 and MSX
- Replies: 11
- Views: 30193
Re: Video: Lesson P5 - Bitmap graphics on the TI-83 and MSX
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 can't find any information,so far, on it on how to ...
- Sat Jan 02, 2021 12:17 am
- Forum: MSX & MSX2 Assembly Programming
- Topic: Video: Lesson P5 - Bitmap graphics on the TI-83 and MSX
- Replies: 11
- Views: 30193
Re: Video: Lesson P5 - Bitmap graphics on the TI-83 and MSX
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 ...
I came to the conclusion that coloured 3d wire frames graphics on MSX1 can be done at a good speed in MSX1 ...
- Sun Dec 20, 2020 5:50 pm
- Forum: MSX & MSX2 Assembly Programming
- Topic: Video: Lesson P10 - Tilemap graphics on the MSX1
- Replies: 13
- Views: 51515
Is this another bug in Akusprite?-Or did I misunderstand something?
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 ...
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 ...
- Sat Jul 18, 2020 4:21 pm
- Forum: MSX & MSX2 Assembly Programming
- Topic: Video: Lesson P31 - Hardware Sprites on the MSX1!
- Replies: 24
- Views: 50834
Re: Video: Lesson P31 - Hardware Sprites on the MSX1!
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 ...
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 ...
- Fri Jul 17, 2020 11:46 am
- Forum: MSX & MSX2 Assembly Programming
- Topic: Video: Lesson P31 - Hardware Sprites on the MSX1!
- Replies: 24
- Views: 50834
Re: Video: Lesson P31 - Hardware Sprites on the MSX1!
"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 ...
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 ...
- Wed Jul 15, 2020 1:57 pm
- Forum: MSX & MSX2 Assembly Programming
- Topic: Video: Lesson P10 - Tilemap graphics on the MSX1
- Replies: 13
- Views: 51515
Bug in Akusprite conversion to MSX tiles?
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 ...
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 ...