Search found 458 matches

by carlsson
Wed Apr 07, 2021 11:00 am
Forum: Other VTech systems
Topic: VTech Laser 500 and MSX2
Replies: 0
Views: 323

VTech Laser 500 and MSX2

In the Facebook group for the Laser 500 series, it was just brought to attention that the Laser 500 computer started off as a project to make a MSX2 computer but that VTech changed their mind and made a custom computer to replace the Laser/VZ series 1xx/2xx/3xx (c:a 1983 IIRC). Read more about the M...
by carlsson
Wed Apr 07, 2021 10:18 am
Forum: Games programming
Topic: I think i must do
Replies: 2
Views: 410

Re: I think i must do

Good luck! It would seem the demand for physical releases of homebrews is stronger than ever.
by carlsson
Thu Feb 11, 2021 9:08 am
Forum: General CreatiVision forum
Topic: Where could you buy a Creativision?
Replies: 26
Views: 26330

Re: Where could you buy a Creativision?

Late reply: The archive has now closed again, so I can't obtain the full clips any longer. :-(
by carlsson
Fri May 15, 2020 2:44 pm
Forum: General CreatiVision forum
Topic: Where could you buy a Creativision?
Replies: 26
Views: 26330

Re: Where could you buy a Creativision?

At the moment, the Royal Swedish Library (KB) has opened their magazine search engine as a benefit to all bored, self-isolating people. I've made a number of searches on topics that otherwise are near impossible to find information on the Internet, but it turns out the magazine archive is full of in...
by carlsson
Wed Apr 29, 2020 9:23 pm
Forum: Off-topic
Topic: Archimedes
Replies: 4
Views: 5162

Re: Archimedes

For a second I thought about the Socrates, which actually is a VTech product. Hey, in the dark all ancient Greeks look the same!
by carlsson
Wed Nov 21, 2018 11:01 am
Forum: Other VTech systems
Topic: Colecovision Module
Replies: 9
Views: 7792

Re: Colecovision Module

Great write-up! I'm forgetting, do the Salora branded game cartridges say Manager somewhere on the screen instead of Laser 2001 or CreatiVision? From what I understand, quite a bit of the interior electronics in Salora products were manufactured elsewhere (e.g. Siemens, Luxor) and possibly just asse...
by carlsson
Tue Mar 27, 2018 10:45 am
Forum: Other VTech systems
Topic: Great TMS Video Chip Demo
Replies: 12
Views: 10838

Re: Great TMS Video Chip Demo

That the TI VDP was worked on in 1977-78 is interesting as the GI STIC is of similar lineage and it sometimes is claimed one was inspired by the other. Of course we also have Atari, to a lesser extent Commodore and a bunch more hardware developers around the same time. In reality all of them probabl...
by carlsson
Fri Mar 23, 2018 2:36 pm
Forum: Other VTech systems
Topic: Great TMS Video Chip Demo
Replies: 12
Views: 10838

Re: Great TMS Video Chip Demo

Nice documents, and cool game. When Karl Guttag writes they've had fully functional VDP's for 2.5 years by April 1981, does he mean the original 9918 without bitmap mode etc? As for the picture quality, would that be due to what happens once you feed its signals to a RF modulator, something TI avoid...
by carlsson
Wed Mar 14, 2018 2:24 pm
Forum: Games programming
Topic: [cc65]How can I redefine characters and use colors?
Replies: 10
Views: 8432

Re: [cc65]How can I redefine characters and use colors?

Very good questions! Actually I copied that bit of code from Kurt's Titanic demo. In his comments he mentions the BIOS routine VDP_Regwrite at $FE1F: BIOS_VDP_Regwrite = $FE1F ; this is a short subroutine which writes the contents of a into VDP register x. It can also be used for initializing the re...
by carlsson
Tue Feb 27, 2018 11:03 am
Forum: Games programming
Topic: [cc65]How can I redefine characters and use colors?
Replies: 10
Views: 8432

Re: [cc65]How can I redefine characters and use colors?

I believe you need to set up the VDP vectors at $BFF0. I used these values previously: .byte $00 ; VDP 0: External video off, M2=0 .byte $A2 ; VDP 1: 16K mode, Screen not active, Generate interrupts ; M1=0, M3=0, Sprites = 16x16 unmagnified .byte $04 ; VDP 2: Pattern Name Table = 04 * $400 = $1000 ....