[FWD] Does the spec need new graphics?

================================================================================ * Forwarded by Stanislav Udin (500:4232/1.1) * Region : VLADIVOSTOK.ZXNET.LOCAL (VLADIVOSTOK.ZXNET.LOCAL) * From: Alex Udotoff, 500:4232/1.256 (27 Jan 02 22:59) * Who: All * Topic: Does the spec need new graphics? ================================================================================ Hello everyone! If you think that (subj) is needed, then I suggest discussing what it should be. Here's what I DOOM: 1)Resolution: 256x192x16 and 512x192x4. 2)Hardware screen scrolling (like in Dandy) 3)Additional 1MB of memory (for sprites, etc.) This is what it will roughly look like: It is based on a 1MB SIMM (though slightly modified :). When choosing a new graph. mode, one of the two video pages is connected to the area #0000-#7fff ozy, and in the area #c000-#ffff one of 128 pages of additional memory (4 of them duplicate pages of video ozy).SIMMs are faster than RUs, Therefore, all additional memory is considered by the processor as a cache, and it (processor) switches to 7 MHz mode without waiting, as is implemented in KAY-1024 (and perhaps if there are such processors and if it allows environment, 14 MHz with expectation, like a SCORPION-256 tube :). In 256x192x16 mode, each VRAM byte carries information about two pixels in format: D7-D4 - color code of the left pixel, D3-D0 - color code of the right one.Each of the 16 colors is selected from a palette of 4096 colors (12 bit - 16 gradations of brightness per RGB). For some processor unloading This little thing will be observed: if sprites and color code are displayed pixel 0 (background), then the background pixel does not change its value, a kind of hardware mask (for this you will have to cut the SIMM a little :). The 512x192x4 mode is needed more for text output than for toys (colored text 80 characters in Lara :))))), therefore the hardware mask will not be in it. Hardware scrolling will be implemented something like this: two shift ports screen along X and Y. These ports record the number of the pixel from which The drawing of a line (or column) begins. So this is more like a rotation. Horizontally there are 128 scrolling steps, two pixels at a time :(, and verticals 192, that is, point by point. The most unpleasant thing is that to install new graphics you will have to cut something on the computer board, otherwise the card will turn out to be unreasonable complicated and expensive. That's all I had to tell you. 2Evgeny Poddubny: Please send me everything you have on ALTERA. 2Alex Fillipov: Sanya, answer me, I can’t find what you were doing almost!!! Alex -+- GoldED/386 3.0.1-asa9 SR1 + Origin: If you eat, you want to drink, if you drink, you want to live (500:4232/1.256) ================================================================================ Hello everyone! Stanislav

Hello, Kirill! Once, Tue Jan 29 2002 02:28, Kirill Frolov wrote to Stanislav Udin: SU>> The most unpleasant thing is that to install a new one SU>> graphics will have to cut something on the computer board KF> Cut... Once again I am convinced that Nemo’s words about a stupid red-hot one are right KF> subject... SU>> otherwise the card turns out to be unreasonably complex and expensive. KF> It is fundamentally impossible to make it in the form of a card for spec. possible. with just one modification of the computer - cut MREQ ;) and take the video, of course, from the card. Best wishes. Dmitry. [ZX] [Quake] np: No Doubt - Ex-Girlfriend