Changes between Version 14 and Version 15 of geniuspc


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Timestamp:
Nov 18, 2012, 2:07:27 PM (11 years ago)
Author:
pulkomandy
Comment:

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  • geniuspc

    v14 v15  
    44Moreover, this computer have different names in each country, making it even harder to track down the information.
    55 * France : VTech Genius PC
    6  * Germany : VTech Genius IQ 128
     6 * Germany : VTech Genius IQ 128 and VTech TV 512
    77 * UK : VTech IT Unlimited
    88 * USA : VTech Precomputer Unlimited
    … …  
    4848 * Mauve
    4949 * Pink
    50 (the 16th color is likely "darker-than-black", used for blanking ?)
    5150
    52 Resolution seems to be something like 480x200. This makes a 48K framebuffer. Top and bottom borders can have different colors.
     51According to the MESS driver, the 16th color is transparent when used for the hardware cursor.
     52The display resolution is 512x256. That's a 64K frame buffer. Top and bottom borders can have different colors.
    5353
    5454== Serial port ==
    … …  
    6767
    6868= MESS core =
    69 I'm in the process of writing a MESS driver for this machine. So far it has the CPU, ROM and RAM (that was the easy part). Now I'm trying to figure out the memory mapping and the use of the hardware registers, as well as studying the ROM code and trying to understand how it works.
     69
     70I have started a MESS driver for this machine. Other people took a look at it and it's now booting, and allows you to use the machine : video, keyboard and mouse are working, as well as the flash memory chip. There is still no sound, and, as far as I can tell, no serial port emulated.