Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2023-11-30, 18:58

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by n0p

in Marvin \ Sound

in Marvin \ Sound

@polpo Updated FW on my 1.1 to 1.0.1 - LED is certainly more informative now 😀 Regarding gamepad support - i don't seem to get any power from Pico's USB port. Might it be safe to check if microusb port works by trying to power Pico from external source, or it might damage something on board?

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Re: Innovision Voodoo Banshee - memory repair

Posted on 2023-11-30, 14:48

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by n0p

in Marvin \ Video

in Marvin \ Video

Success! -- Time to clean the card 😀 -- If i'd pay more attention from the start - framebuffer organized in eight vertical blocks, line by line. So you can count pixels to fail region. It was the chip number three in sequence. Horisontal line is: 12345678...12345678

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Re: Innovision Voodoo Banshee - memory repair

Posted on 2023-11-30, 13:43

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by n0p

in Marvin \ Video

in Marvin \ Video

So, i decided to look what is possible to obtain here of the closest specs. Found two chips, AOTOM (6ns) and ESMT(5ns). Guess what? Both worked. But that was not places of failing chip 😁 So i assume it safe to replace chips by one if access time is same or lower.

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2023-11-29, 17:22

by

by n0p

in Marvin \ Sound

in Marvin \ Sound

[Are you able to get pgusinit to work if the PicoGUS is mounted on the ISA card and you use the ISA extension that comes with the Book8088? I wanted to use a mouse in Mod Master XT so was using a multi i/o card and the PicoGUS on the the 3-way ISA. The mouse works fine, but pgusinit cannot find the …

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Re: Will the Book 8088 be a future classic?

Posted on 2023-11-27, 14:57

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by n0p

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I altered Makefile to suit my needs for the build (put two builds of XT-IDE), so you need to use WSL under Windows (i do) or Linux/BSD system/Mac, and i don't feel like writing instructions. All command are basic (awk, du) so simple "make bios-book8088-xtide.rom" should do. I wanted to implement …

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Re: Will the Book 8088 be a future classic?

Posted on 2023-11-25, 13:36

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by n0p

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

True, ordered yesterday V2 VGA w/o ISA, but with additional CGA card for $155. -- If anyone having strange issues with Book - try another 12V power adapter.

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2023-11-25, 09:33

by

by n0p

in Marvin \ Sound

in Marvin \ Sound

Regarding PicoGUS and Book8088. I recently started to have some issues on Book, which i thought was to to my heavy modding of it. Dots on screen, random hangs, memory errors. It was the power source I switched to 12V power supply from one of my old routers - and guess what? pgusinit finds the device …

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Re: Innovision Voodoo Banshee - memory repair

Posted on 2023-11-25, 07:36

by

by n0p

in Marvin \ Video

in Marvin \ Video

@pentiumspeed, thanks for link! Seller advertized those as Hynix, but due to some problems and very low cost of memory itself i didn't open a dispute in time. Anyway i decided to try those :) - as i was sure replacing one chip at time would work. Now i need some time to embrace myself for second try …

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Re: Innovision Voodoo Banshee - memory repair

Posted on 2023-11-24, 18:09

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by n0p

in Marvin \ Video

in Marvin \ Video

Bought this chips on Aliexpress, advertised as Hynix. Didn't work, tried two of them, Card somewhat works with them, but with that chips black lines appear, so they are either faulty or timings are off. Soldered back original RAM, now i'm sure it's not first or last chip 😀 I'll keep looking.

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Re: Will the Book 8088 be a future classic?

Posted on 2023-11-19, 19:32

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by n0p

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've successfully connected keyboard to Book8088 via Waveshare Zero (RP2040) https://www.youtube.com/watch?v=jP_Zx4weHFM and my own code for it. RP2040 should function as USB connector for keyboard via USB-OTG and bridge to original keyboard controller. Unfortunately, i did something wrong while …

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Re: Will the Book 8088 be a future classic?

Posted on 2023-11-18, 18:53

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by n0p

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not exactly a serious mod, but as a part of learning microsoldering i've replaced Book's indicator leds - wanted to do that from the start. Left blue "full charge" one, but might replace it with green as well. 0603 doable with magnifier and thin tip. Now CF is green, turbo - white, "alive" - yellow …

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Re: Will the Book 8088 be a future classic?

Posted on 2023-11-15, 08:11

by

by n0p

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

did you try flashing concatenated cp866.bin to your cga card? Not sure I can create a valid binary - I'm working in Windows on Parallels VM on my mac and Parallels screws something with file system creating invalid files sometimes. Can you, please, help creating a valid file for me, so that I can …

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Re: Will the Book 8088 be a future classic?

Posted on 2023-11-15, 06:37

by

by n0p

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I’ve made some photos of v2 board while disassembling: 5922D9F3-C484-4109-9BE0-A0BBA169A41F.jpeg Looks like no more external display out. What surprised me is the text underneath the video board: 'VGA-BK3-9000i'… Isn’t it what I’m thinking about?.. :) Дякую за фото. This makes me stop thinking …

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Re: Will the Book 8088 be a future classic?

Posted on 2023-11-13, 07:35

by

by n0p

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

^For authenticity, there's the DOS for the Poisk-1, SF-DOS ('Sigma Four').. Poisk was a series of eastern PC compatibles. That DOS should be on MS-DOS 2.11 or 3.x level. Alternatively, there's the East German DCP in version 3.20/3.30. The Disc Control Program uses latin characters/filenames, at …

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Re: MartyPC

Posted on 2023-11-07, 15:30

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by n0p

in PC Emulation

in PC Emulation

Looks awesome! When should we expect a beta release? By the end of the year, at latest. I made the mistake of starting a new hardware feature, too, but that's coming along well so far (you can look at my recent commits if you want to spoil it!) I'd like the new ROM management system to make it in, …

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Re: MartyPC

Posted on 2023-11-07, 12:07

by

by n0p

in PC Emulation

in PC Emulation

Posting a sneak peek of MartyPC 0.2.0. I've implemented a lot of people's suggestions, as well as dozens of bug fixes and many fundamental accuracy improvements derived from my recent hardware research. Scali, I finally figured I could do a video of 8088MPH justice, so here it is (in 1440P): …

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Re: Will the Book 8088 be a future classic?

Posted on 2023-11-02, 16:19

by

by n0p

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

RGBtoHDMI adapter works :) Good: finally external monitor can be connected. No so good: Composite emulation is not nice, but as that opensource project, the problem could be addressed :) There's some additional blanks after mode change, maybe some kind of calibration kicks in. Bad: End effects of …

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Re: Will the Book 8088 be a future classic?

Posted on 2023-11-01, 19:01

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by n0p

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The Book8088, even with an 8088 CPU, isn't quite 100% cycle-accurate to an IBM PC. Can we fix that? Well, yes we can! https://martypc.blogspot.com/2023/09/hacking-book8088-for-better-accuracy.html Since i needed to fix my Book anyway, i've made this to my Book and it works :) https://www.youtube. …

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Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)

Posted on 2023-10-31, 07:23

by

by n0p

in Marvin \ Sound

in Marvin \ Sound

I checked with someone who has a Book8088 and one of my "Femto" PicoGUS boards that are made to plug directly into the ISA pin header on the Hand386/Book8088. He says it works and he can play mods in Mod Master XT with it. The major difference with that board is that it uses a 74AHC14 at U5 instead …

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Re: Will the Book 8088 be a future classic?

Posted on 2023-10-26, 17:38

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by n0p

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@KarlG, according to Sergey's post on VCFED forums: VGA won't init on 8088 CPU as it's BIOS uses 186 commands. So if you inserted 8088 into V2 Book with VGA - that's the cause. https://forum.vcfed.org/index.php?threads/book-8088-discovery-and-modification-thread.1245155/#post-1344999 Oh, …

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