nfg.forums

I want to make a pump for a custom espresso machine, with the focus on controlling water flow rather than pressure. I will use a piston (I first tried a 40mm cylinder) and push water at about 1ml/s. The pressure is high, so I'm thinking of using a ball screw to push a 6:1 lever arm. I need to know which stepper motor would be good to use.

So... I need a motor/gearbox/ball screw to push a 30kg load, at about 3mm/s, and a distance of 250mm (these numbers are somewhat adjustable, I can increase the load and decrease the speed, or increase the distance and speed with a decrease in load)

I think I'll use a 1mm lead ball screw...?

Can I use a Nema 23 stepper motor (https://www.oyostepper.com/category-7-b0-Nema-23-Stepper-Motor.html)

Hey thanks for all the help so far , I'll keep those things in mind and look out for those issues, plus don't worry I'm used to repairing retro stuff , I've recapped motherboards and replaced CRT flybacks but on MS-DOS and Amiga computers.

And for sure if I run into any problems I'll let you guys know.

I've got another question for future reference

https://gamesx.com/wiki/doku.php?id=x68000:sx-68m_-_midi_board

This page mentions the Sacom SX-68M MIDI card not being as compatible as the sharp CZ-6BM1 but they both have the same YM3802-X chip so what's the deal with that?

Found it. TBH I don't remember what all I did and some of it is definitely a little iffy. I don't think I tested it thoroughly either. XBASIC is untranslated for sure.

Heres a link to the download.
https://www.dropbox.com/scl/fi/j2x61hnad84881pa2bw58/HUMAN302-English.XDF?rlkey=8iasrb04nj4mtob18lb31i7hk&st=lw15g69d&dl=1

It does look like the one tool is called BIND. It combines .X files into a single executable. I don't remember the details though. A build script looks kinda like this.

has060 cmd.dis -o cmd.o
hlk cmd.o -o cmd.x

has060 commando.dis -o commando.o
hlk commando.o -o commando.x

bind /o command.x cmd.x commando.x

Hi @SomeGuy

I would start looking for the bits to replace the PSU. Basically a PC ATX PSU and a little logic chip for the 'Power On' signal.

From the X3 PSUs I've seen I would say it is highly likely the PSU is a leaky mess and I would personally not try it.

I've also found that there are a number of small capacitors on Disk Drives near the Power Connector which leak. So if the Disk Drives don't work that is worth looking at.

If the battery is still on the motherboard again, highly likely it's leaked and been sucked into the Main Crystal. Again there are solutions.

It's all fixable. But if your not used to fixing old computers it could be a bit daunting.

Also on OG X68K there is 1 damn screw that is accessed through the other Tower which is attached to the PSU case, so the other side also has to be stripped down. Dont refit this screw!!!

We are ready to help when it gets to you

As far as I know, given it's a HPCN50 port, just an external SCSI 1/2 drive should work, if you manage to find a cable or an adapter...

Thanks for the heads up, I was aware of the detana twin bee but not garou so I'll look into that for sure. My apologies for the noted issues in 2.20 as it looks like some of these are new to this version, but I think I understand the possible root cause for some of it and plan to have them resolved in the next release.

Just to give some sort of progress report... I have the new version running on multiple partitions and am almost through testing on emulators, going to proceed with real hardware next - have already begun some testing there. I have the issues noted in these threads and plan to address before adding any new games. Some have been fixed like the reported issue with akumajou crashing, and I have aquales running from hdd but I still need to work through the others. Sorry for the delay but this release is going to be a little bit more complex due to the way it's set up. Will be easier to install with modern scsi emulators but I want to keep scsi2sd support so I need to make sure that's working fully before pushing an update. There will be plenty of space in the D,E,F volumes to add content. Plan on using an 8GB SD card for this one.

UPDATE 27Oct - All paths corrected and all games finished testing on emulation - All reported problems addressed. My plan is to now install on Henkan Bancho and see if I can troubleshoot those issues next.

Not sure if these glitches were reported but I noticed some games suffer from performance issues like slowdown or screen glitches even though they should work fine. Garou Densetsu 1 and Detana Twinbee run janky but they run perfectly fine using the older 1GB image posted by someone else. I run them on X68000 first model using BlueSCSIv2. If anything I would repair anything that is glitching or not working in the next version first before adding anything more

I would like to buy an external 5.25inch floppy disk drive for my NEC PC-9821Ce.

The PC9821CE has a 50pin Mini Centronics connector for an external 1MB Floppy Disk.

Can I connect any 50 pins external floppy drive to this connector or does it require a specific model?

btw, here are photos of the connector:
https://www.fromjapan.co.jp/japan/tw/auction/yahoo/input/f1103573780/

I did something like this ages ago for I think everything that comes on a human 3.02 disk (sorry I don't have it handy). You can, if you are a little persistent, disassemble, translate, and reassemble everything and not have to truncate your strings to fit in the binary.

I think that a bunch of it is multi-executable put together with a tool called BIND (the name escapes me a bit). I used that combined with DIS, HAS060 and HLK. The only one you need to be a little careful with is human.sys because there is sort of limited space for it in RAM. The memory map is in tachibana eriko's programmer documentation. All I remember offhand is that it gets placed at $6800 but I don't remember how much space is reserved for it.

TBH Sharp doesn't actually seem to care what you do, license be damned. The Japanese guys are doing stuff all the time. I think Sharp understands well at this point that if it wasn't for their efforts no one would even be using their machines at this point. If you're really sweating it you can release binary patches with BUP.

http://tkhr000.s601.xrea.com/x68softlist/x68soft.htm

Gradius
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A-Jax
Motos
Fantasy Zone
Choujin
Terra Cresta
Nekketsu Koukou Dodgeball
Downtown Nekketsu Monogatari
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Gamma Planet
Phalanx
Genocide
Pipyan
Star Mobile
Last Battalion
Flappy 2
R-Type

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