Aaron707 wrote on 2022-11-26, 01:37:

other note, I ordered a 3D printer during the black Friday deals going on. So once I have my kit in hand I will finalize the details of the case design I started for my TinyLlama. Still need to practice more with the CAD app and watch more tutorials. So far its just a simple empty case with ports. Need to re-do as two halves that can be assembled.

That looks pretty damn slick! 😁 Hope to see it come to life!

tabm0de wrote on 2022-11-26, 07:45:

Question, how difficult would to be to enable to be able to boot from usb floppy drive? Haven’t tried cdrom yet , but will try it later today

I honestly have no idea, don't own any of those. I imagine it would be possible though, and there's always the option to hack the BIOS if there's stuff missing! 😉

I know this is to much to ask, but has any one tried windows 3.1? 😉 it just jumps back to prompt when trying to run it. installation works fine.

*edit, strange does start if i typ "win /s" ( Start windows in standard mode) no ide what mode it tries otherwise haha

tabm0de wrote on 2022-11-27, 19:18:

*edit, strange does start if i typ "win /s" ( Start windows in standard mode) no ide what mode it tries otherwise haha

Windows usually starts in 386 enhanced mode, standard mode is for 286s. Check your DOS memory setup maybe?

rasteri wrote on 2022-11-27, 19:40:

tabm0de wrote on 2022-11-27, 19:18:

*edit, strange does start if i typ "win /s" ( Start windows in standard mode) no ide what mode it tries otherwise haha

Windows usually starts in 386 enhanced mode, standard mode is for 286s. Check your DOS memory setup maybe?

I just tried everything out of the box, haven’t check anything els to be honest except a svga driver with 256 colors.

*edit did a reinstall again on top the existing and it just started to work, no ide what happened first time.

Things are looking good 😁

Finally my first one is 100% done.

I just wanted to post all thing around the soldering that i have hade problems with if it could help any one in the future 😀

My plan was use pcb stencil with hotplate for all the small components, which in my world was suppose to be easier.
First board i did have problem that the bord was just keep restarting and did not find a real issue, so resoldered all the components again by hand instead and booted fine 😉

Second board was done by hand instead of hot plate, which i most say was way easier then expected.
Stupid problem i had with this one was that the board just hang on bios when sd card was inserted, that was due to a pin for the sbc wasn't soldered 100%

I also hade one problem where i did not get any mt32-pi sound, my first step was to remove the pc speaker and then try the output on the GY-PCM5102 which also didnt output anything, as always at least for me i seem to get a non working PCM5102, doent matter if i buy the cheaper version also, so i would recommend put in the pc speaker after testing mt32-pi.

When having problems with usb mouse, i just gab a cheap non power usb hub that i had and connected the mouse to it, then the mouse worked without problems 😀

Otherwise the project is fun as hell, but i do get it takes time to put one together 😀 my plan is to make 5 and probably sell 2 of them to cover my expense 😀

I will also make few clean sd images, dos 6.22/win3.1 , windows 95 and windows 98 just to be able to simple switch between OS.

* YES i do know the bigger screen looks silly, but i rather have a bigger one 😀

Question regarding "Pin 23 (FORCEON) should not be tied to GND, because this enables auto-powerdown which doesn't play well with serial mice. Instead, it should be tied to VCC to disable the feature."

The only "Pin 23" i can think of, and easiest fix for that would be something like the picture if im not wrong ( of course cut it away from GND first )? or är jag ute och cycklar ?

tabm0de wrote on 2022-11-29, 09:19:

Question regarding "Pin 23 (FORCEON) should not be tied to GND, because this enables auto-powerdown which doesn't play well with serial mice. Instead, it should be tied to VCC to disable the feature."
The only "Pin 23" i can think of, and easiest fix for that would be something like the picture if im not wrong ( of course cut it away from GND first )? or är jag ute och cycklar ?

I see I forgot to mention which IC I was talking about in the errata document (I've rectified that now). It's the MAX3243 chip, and has nothing to do with whatever you're showing in that screenshot you just posted! 😀
For more info, take a look here.

Eivind wrote on 2022-11-29, 10:43:

tabm0de wrote on 2022-11-29, 09:19:

Question regarding "Pin 23 (FORCEON) should not be tied to GND, because this enables auto-powerdown which doesn't play well with serial mice. Instead, it should be tied to VCC to disable the feature."
The only "Pin 23" i can think of, and easiest fix for that would be something like the picture if im not wrong ( of course cut it away from GND first )? or är jag ute och cycklar ?

I see I forgot to mention which IC I was talking about in the errata document (I've rectified that now). It's the MAX3243 chip, and has nothing to do with whatever you're showing in that screenshot you just posted! 😀
For more info, take a look here.

hahah, thanks 😀

Really need it it as i havnt find any ps/2 driver that work in windows 3.1 at the moment, so serial mouse was the way to go for now 😉

So i have tried everything i can, if someone knows how to get the usb/ps/2 emulate working in windows 3 please tell me! 😀 serial mouse work without problem in windows, ps/2 emulate works great in dos and ctmouse can find it, but i have no luck with windows 3.1 and a ps/2 driver.

If someone is interested, i ran softmpu /MPU:330 before starting monkey island with "monkey r" and the sound seems to be good, this might be a faster way then disabling stuff in bios.

tabm0de wrote on 2022-11-30, 10:26:

So i have tried everything i can, if someone knows how to get the usb/ps/2 emulate working in windows 3 please tell me! 😀 serial mouse work without problem in windows, ps/2 emulate works great in dos and ctmouse can find it, but i have no luck with windows 3.1 and a ps/2 driver.

Nah, seems like both Windows 3.1 and 98 doesn't like SeaBIOS's PS/2 emulation. 🙁

tabm0de wrote on 2022-11-30, 20:35:

If someone is interested, i ran softmpu /MPU:330 before starting monkey island with "monkey r" and the sound seems to be good, this might be a faster way then disabling stuff in bios.

Cool! Was this in MS-DOS? I seem to recall softmpu crashing when running under freedos's JEMMEX/JEMM386... 😒

Btw, I reverted back to the standard 18.2 Hz PIT timing - I just discovered my Microsoft serial mouse didn't work with the faster timing. So I guess it affected the serial communication somehow. Well, I didn't really know what I was doing messing with the PIT anyways, so I'll just keep it at its default value for now. Updated BIOS here.

Eivind wrote on 2022-12-01, 00:26:

tabm0de wrote on 2022-11-30, 20:35:

If someone is interested, i ran softmpu /MPU:330 before starting monkey island with "monkey r" and the sound seems to be good, this might be a faster way then disabling stuff in bios.

Cool! Was this in MS-DOS? I seem to recall softmpu crashing when running under freedos's JEMMEX/JEMM386... 😒

Ye, i an running dos 6.22 at the moment 😀

Eivind wrote on 2022-12-01, 00:23:

tabm0de wrote on 2022-11-30, 10:26:

So i have tried everything i can, if someone knows how to get the usb/ps/2 emulate working in windows 3 please tell me! 😀 serial mouse work without problem in windows, ps/2 emulate works great in dos and ctmouse can find it, but i have no luck with windows 3.1 and a ps/2 driver.

Nah, seems like both Windows 3.1 and 98 doesn't like SeaBIOS's PS/2 emulation. 🙁

Stupid question, what version of seabios is used for tinyllama? i saw some old post others have hade problem with ps/2 mouse and windows 98 with older version of seabios . when downloading lates seabios i can see there is some changes in mouse.c ( seabios-1.16.0 ) vs https://github.com/eivindbohler/tinyllama-bio … ios/src/mouse.c, aslo think I saw some extra usb info in usb files

Windows 98 should get away with usb hid peripherals on its own.

Now I'm not sure if it's possible to disable the emulation while running windows 98 ...

Deksor wrote on 2022-12-02, 14:30:

Now I'm not sure if it's possible to disable the emulation while running windows 98 ...

Most BIOSes disable the emulation when the USB controller is initialized.

Something I thought about was : what if we made the opposite of a passive usb to ps/2 adapter : making a passive ps/2 to usb adapter ?
By that I mean that we could select between usb and ps/2 signalling over an usb port via a jumper and when set to ps/2, the usb port isn't a real usb port anymore but rather a ps/2 port with a usb connector. All you'd need then is a passive adapter to connect a ps/2 mouse or a ps/2 keyboard, without needing to add more connectors to the PCB.

If you have a usb mouse that can be used as a ps/2 mouse with such adapter you may not even need any adaptor

@deksor

I think that's what rasteri's HIDman is for.