EGA monitor

Hi Kirill! 08 March 2003 19:32, Kirill Frolov wrote to Alexander Razmayenko: AR>> in truth, if - Karga (CGA that is) is just digital, AR>> ugh damn it - analog, of course, RGB with the addition of Intensity and AR>> that's all... and it differs from vga only in scans... KF> Absolute nonsense. CGA fundamentally does not show more than 16 colors KF> and EGA is more than 64. For specific monitor models, for the sake of simplicity KF> circuits, especially on CGA, an analog input can also be implemented (all KF> one computer digital output). But according to the standard it is digital. Can you explain how this CGA, which is not much different from a TV, can show only 16 colors? Is his phosphor so special? With color differentiation? :-) Bye Kirill!

A day has passed, and you are still alive! All! I connected my subject. The circuit is based on 2 mikrukhs LA3 and LE4, i.e. inversion of scans and Correcting bright blacks. The effect is amazing. Yellow color is missing as a class. Instead, red, or purple, or something in between. And all other colors are fine are displayed. Another glitch - there is no Bright at all! Not only on black, but on no other color. Who can tell me what to do now? Oh yes! My computer is a green scorpion. There were no other circuits soldered onto it. before this one, i.e. deprived the board of virginity, but it turns out that it was in vain... :~( ZXNet: 500:8462/1 ~/ <~ http://zxnet.da.ru/ Fido: 2:5057/56 /_ _> SkyNet: 71:170/21

Hello Kirill! 20 Oct 03 20:07, Sergey Zotov -> Kirill Frolov: SZ> The question is open! Who connected Scorp to the EGA monitor? I don’t understand why you’re so worried, I connected the quorum to our electronics, there was ega Sharposky, there was also some kind of Toshiba (sort of) there are no troubles there rgb via ln1 the rest is through the buffer. lp, ll, li, on the drum. Bay W.B.R. rNd [Team: X-Tension] [FREE] [BSB] [GMD]

Hello Sergey! Monday October 20, 2003 20:07:51 Sergey Zotov -> Kirill Frolov: SZ>>> Who can tell me what to do now? KF>> Connect via RGB. The monitor will have to be upgraded. KF>> Find where the DAC is located to which the monitor input is connected KF>> find where y KF>> DAC output of RGB signals. Throw out the DAC and use it instead KF>> connect KF>> Spectrum. The signals may have to be inverted or KF>> strengthen. [disk error] SZ> The question is open! Who connected Scorp to the EGA monitor? I connected. To correct the colors (brown instead of yellow, pale pink instead of bright red, pale blue instead of bright blue) I had to arm myself with a cutter, a soldering iron and pieces of wire. I cut the roads around the DAC one by one, which in my opinion were color and looked at what screen. Finally found that one path, circumcision which immediately corrected the colors to normal. [REAL ZX]

Hi Sergey! October 18, 2003 21:14, Sergey Zotov wrote to All: SZ> I connected my subject. The circuit is based on 2 micros LA3 and LE4, i.e. inversion SZ> scanning and correction of bright black. [kus] SZ> Who can tell me what to do now? Of course, I could be wrong, but this should help. The board and monitor are like this for me Well, one person did it on LH1 - he says it works. But I haven’t turned it on yet - no I know. And this diagram was in some magazine. ° ° ° ° ° (C) A.V. Apollonov, Arzamas, 1998 Connecting a CGA monitor Recently, when connected to the ZS-256-T+ I had to use a color IBM CGA monitor face a number of problems: since CGA monitors are designed for TTL level signals positive polarity, lowercase signals and frame synchronization requires inversion titrate, but the main disadvantage is due to separate signal Intensity (brightness) there is a bright black (whitish) color, which makes the graphics simply terrible. Below is my diagram, I provide - This makes it easy to connect a CGA monitor when In this case, black color is always black, i.e. all 15 (not 16!) spectra are provided - sky flowers. 1┌─────┐ -KSI ┌──┤ & │3 KSI 12D42 ────┤ 2│ o────────── 9 CGA └──┤ D1.1│ └─────┘ 4┌─────┐-SSI ┌──┤ & │6 SSI 13D42 ────┤ 5│ o─────────── 8 CGA └──┤ D1.2│ └─────┘ R VD1 R1 2K R 7D43 ────>├────┬───███──┤ ── 3 CGA G VD2 │ G 4D43 ────>├────┤ ── 4 CGA B VD3 │ 9┌─────┐ B 12D43 ────>├────┴────┤ & │8 ── 5 CGA I 10│ o─┐ 9D43 ────────────────┤ D1.3│ │ └─────┘ │ ┌────────────────┘ VD1-3 KD520 │ 12┌─────┐ │ ┌──┤ & │11 I D1 K555LA3 └────┤13│ o──── 6 CGA └──┤ D1.4│ └─────┘ R-G-B signals are not monitored. педственно с микошемы D43 (KP11). The scheme is sufficient enough to nominally resistor R1. CGA connector (9-pin): ┌───┬─────────────┬─────────── │ 1 │ Shield │ Earth │ ├───┼────────────┼─────────── │ 2 │ Ground │ Zemlya │ ├───┼────────────┼─────────── │ 3 │ Red │ Kpasny │ ├───┼────────────┼─────────── │ 4 │ Green │ Зеленый │ ├───┼────────────┼─────────── │ 5 │ Blue │ Blue │ ├───┼────────────┼─────────── │ 6 │ Intensity │ Япкость │ ├───┼────────────┼─────────── │ 7 │ Nc │ Резепв │ ├───┼────────────┼───────────│ 8 │ H.Sync │ Page Sync. │ ├───┼────────────┼─────────────┤ │ 9 │ V.Sync │ Frame Sync. │ └───┴────────────┴─────────────┘ You can connect a CGA monitor in the same way. to any Spectrum. For Pentagon-128, signals must be taken from the following microcircuits: brightness - 9th leg D47 page sync - 1 leg D6 frame sync - 2nd leg D6 red R - 3rd leg D72 green G - 6 leg D72 blue B - 8 leg D72 By the way, you can also use EGA monitor tori. They are designed to work in two modes - CGA and EGA. This sometimes displays indicated by MODE 1 and MODE 2 indication on the housing monitor. EGA - monitor analyzes fields - the number of horizontal sync pulses, pos- stampeding at its entrance. If this polarity is positive, then the relay switches the block horizontal scanning at a frequency of about 16 kHz (MODE1-CGA). If the horizontal sync pulses have negative polarity, then the monitor switches to EGA frequency - about 22KHz (MODE 2). EGA connector (9-pin): ┌───┬─────────────┐ │ 1 │ Earth │ ├───┼─────────────┤ │ 2 │ Extra Red │ ├───┼─────────────┤ │ 3 │ Red │ ├───┼─────────────┤ │ 4 │ Green │ ├───┼─────────────┤ │ 5 │ Blue │ ├───┼─────────────┤ │ 6 │ Extra Green │ ├───┼─────────────┤│ 7 │ Additional Blue │ ├───┼─────────────┤ │ 8 │ Stp. Synkhp. │ ├───┼─────────────┤ │ 9 │ Cadp.Synkhp. │ └───┴──────────────┘   Bye Sergey!

How are you, Kirill? My onboard systems detected that on Friday October 24 2003 02:10, Kirill Frolov wrote to Sergey Zotov: KF> CGA and EGA monitors have DIGITAL INPUTS. In binary code to the monitor ^^^ exactly??? then your brother has your 32vtc also has a number wow... :) ugh, damn it - you need to read less boas... in truth, if - Hag (CGA that is) is just digital, ugh damn it - analog, of course, RGB with the addition of Intensity and all that... but from vga it The only difference is the scan... KF> CGA and EGA monitors are DIFFERENT, INCOMPATIBLE why are you contradicting yourself? oh well... :) time to sleep It's already 4 o'clock in the morning... Best regards, Alexander Razmayenko.

Press RESET immediately, Alexander Razmayenko! On Mon, 27 Oct 03 04:51:17 +0300, Alexander Razmayenko wrote: KF>> CGA and EGA monitors have DIGITAL INPUTS. In binary code to the monitor AR> ^^^ exactly??? Absolutely. AR> then your brother also has a digital 32vtc AR> fhot... :) Score: -10. For mocking the Russian language. AR> ugh, damn it - you need to read less about the boa... What is a "boa constrictor"? AR> in truth, if - Hag (CGA that is) it’s just digital, damn AR> - analog, of course, RGB with the addition of Intensity and all that... and from vga AR> it differs only in scans... Absolute nonsense. CGA fundamentally does not show more than 16 colors, but EGA is greater than 64. For specific monitor models, for the sake of simplifying the circuit, especially on CGA, an analog input can also be implemented (all the same computer digital output). But according to the standard it is digital.

Press RESET immediately, Konstantin Butorin! On Sat, 08 Mar 03 23:19:59 +0300, Konstantin Butorin wrote: KB> Can you explain how this is a CGA, which is not much different from a TV, KB> can only show 16 colors? Is the phosphor so special? KB> With color differentiation? :-) It has a digital input. In general, input -> DAC -> video amplifier. And usually it’s like this: input -> logic (inverter or something else) -> set of resistors, as in Spectrum -> video amplification. Theoretically, the signal from the monitor You can feed it directly to a video amplifier, but only theoretically.

How are you, Kirill? My onboard systems detected that on Friday November 07 2003 19:45, Kirill Frolov wrote to Alexander Razmayenko: KF> Press RESET immediately, Alexander Razmayenko! KF> On Mon, 27 Oct 03 04:51:17 +0300, Alexander Razmayenko wrote: KF>>> CGA and EGA monitors have DIGITAL INPUTS. In binary code KF>>> monitor AR>> ^^^ exactly??? KF> Absolutely. AR>> then your brother also has a digital 32vtc AR>> fhot... :) KF> Score: -10. For mocking the Russian language. uh... Monsieur moderator? although this is not my condemnation, it is only puzzling question... although... perhaps Monsieur Komodo is really undercover :) but I'm just asking :) AR>> ugh, damn it - you need to read less about the boa... I agree. moreover, in a deliberate form... and so if - it was just me kidding. although I apologize for this if someone has this, not you... well, sorry, I won't bother you guys too much :) KF> What is a "boa constrictor"? go online to the website udaff.ru and have fun with all the creativity there program :) AR>> in truth, if - Hag (CGA that is) is just digital, AR>> ugh damn it - analog, of course, RGB with the addition of Intensity and AR>> that's all... and it differs from vga only in scans... KF> Absolute nonsense. CGA is fundamentally more than 16 colors KF> shows KF> and EGA is more than 64. For specific monitor models, for the sake of simplification KF> circuits, especially on CGA, an analog input can also be implemented (all KF> the computer has one digital output). But according to the standard it is digital. E.G.A. RrGgBb = 6 digits in the palette register! (small symbols - brightness channel for colors) 2 to the 6th power = 64 colors TsGA RGBI= bit that is, for each EGA color channel there is a subcolor or channel brightness (in other words that is) and...mmmmmdaaa...sorry :) in the CGA there is a common brightness channel for all colors... in total we really get that without participation of the brightness channel comes out 8 colors with the brightness of our 16 colors... Okay, let me admit my mistake once again and sprinkle ashes on my head :) but by the way, there was no such reasoned answer from you... I did all this myself I dug it up... just like that :-P... so don’t consider your victory an absolute one... ;) it's a draw so to speak. :)Best regards, Alexander Razmayenko.

Hello, Alexander! One day, Mon Nov 17 2003 04:00, Alexander Razmayenko wrote to Kirill Frolov: AR>>> ^^^ exactly??? KF>> Absolutely. AR>>> then your brother also has a digital 32vtc AR>>> fhot... :) KF>> Score: -10. For mocking the Russian language. AR> uh... Monsieur moderator? Me! What? ;) AR> although this is not my condemnation, it is only AR> perplexing question... There may have been banter, here, obviously, someone was offended. Happens. PS. From me personally, by the way, the assessment would be similar ;) The people have problems with the Russian language, big problems; sometimes It’s really impossible to understand - is this a joke or is it just necessary, in the sense that such writing characterizes the literacy of an individual. Best wishes. Moderator [ZX] [Quake]

How are you, Moderator? My onboard systems detected that on Tuesday November 25 2003 01:05, Moderator wrote Alexander Razmayenko: KF>>> Score: -10. For mocking the Russian language. AR>> uh... Monsieur moderator? M> ME! What? ;) I apologize if I asked the question incorrectly again - I was just asking a question about whether this name KF is an “undercover” moderator... well... apparently I carelessly brought down a snowball... although if you look at the situation is not without humor, it all sounds quite funny... but the fact that in that phrase there was a call for help - and I just realized it myself... :) (by this I don’t want to injure anyone, much less - I don’t even want to think about arguing with moderator) AR>> although this is not my condemnation, it is only AR>> perplexing question... M> there, perhaps, banter, here, obviously, someone was offended. It happens. yes. exactly like that... pure banter... well... that means the local audience is not I’m familiar with the creativity there.. for this reason, let me apologize - with my protocols into someone else's network... M> PS. From me personally, by the way, the assessment would be similar ;) Well... I mean... I admit my guilt... measure, degree, depth :) (c) M> The people have problems with the Russian language, big problems; sometimes M> it’s really impossible to understand - is this a joke or is it just necessary, in M> in the sense that such writing characterizes the literacy of an individual M> individual. about the fact that the problem with Russians is not to laugh, but probably to cry should be when you read not misspellings or distortions (for the sake of banter) but real ones mistakes... this is sad... 2KF: and all the same, you probably need to at least from time to time pay attention to all kinds of differences emoticons... although this is just IMHO... Therefore, let me take my leave Best regards, Alexander Razmayenko.