As for origins on Book8088 - i would like to summirize what i personally know so far: Done by a person or a team named "Cycle Logic" Knows how to program STM microcontrollers (STC8G2K32S4), controls keyboard, Turbo, Mute and some leds - found by Retroplayer @ VCFED Knows CLPD programming quite good …

I guess they had the Trident TVGA9000i option too... That would actually work on 8088, because Trident BIOS doesn't use 186+ instructions If it only be possible to desolder Cirrus chip and bios on current board and swap it to Trident ones and it’ll work… I would :) CL-GD5428 and TVGA9000i have …

Hello, it's Pengan here. Today, I replaced Sergey's BIOS on my Book8088. Currently residing in China, the cost of making BIOS chip here is quite low. 4x Windond W27C512 + 5x ST M27C512 = 83 Yuan. Additionally, I acquired an ATMega8a EEPROM programmer for 50 yuan. I haven't purchased a UV eraser yet …

Errand wrote on 2023-11-14, 22:25: What surprised me is the text underneath the video board: 'VGA-BK3-9000i'… Isn’t it what I’m thinking about?.. 😀 Yeah, I guess they had the Trident TVGA9000i option too... That would actually work on 8088, because Trident BIOS doesn't use 186+ instructions

I am actually looking for an alternative melody. As you said, Intel tune is not the best match for soviet 8088 clone or NEC CPUs ;) Any takers... simple cheerful boot sound, just a few notes long? :) You may want to try the audio sample I've attached to that post - it's nice and cheerful. The same …

^For authenticity, there's the DOS for the Poisk-1, SF-DOS ('Sigma Four').. Sorry, do you know how the startup PWM melody can be customised? 'Intel inside' melody seem to mismatch the soviet CPU, hehe :) Since there isn't any way to detect this CPU through BIOS (no technical difference from Intel, …

What Adlib test program do you use? It should be the OSC signal unless the chipset, the 74*244 buffer (U12), or the R3 resistor are somehow bad. It is not particularly likely, but worth checking. If I recall correctly OPL2 uses ports 388h and 389h, so there shouldn't be a conflict between that and …