Can all registered uses please login, even just for a few minutes..
It helps build a picture where our "good traffic" is coming from..
Thanks :)
It helps build a picture where our "good traffic" is coming from..
Thanks :)
My OSI 610 build - Expansion for the OSI 600
-
stephen_usher
- Site sponsor
- Posts: 7510
- Joined: Mon Nov 13, 2017 7:19 pm
- Location: Oxford, UK.
- Contact:
Re: My OSI 610 build - Expansion for the OSI 600
*sigh*
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
-
rubber_jonnie
- Site Admin
- Posts: 15200
- Joined: Thu Aug 17, 2017 7:40 pm
- Location: Essex
- Contact:
Re: My OSI 610 build - Expansion for the OSI 600
That's about the top and bottom of it...
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
-
HigashiJun
- Posts: 2422
- Joined: Fri Jun 19, 2020 7:21 am
- Location: Tokyo
Re: My OSI 610 build - Expansion for the OSI 600
rubber_jonnie wrote: Tue Jul 15, 2025 4:47 pm And just to annoy me even further, the FDD interface no longer works, even though the RAM upgrade does...
-
rubber_jonnie
- Site Admin
- Posts: 15200
- Joined: Thu Aug 17, 2017 7:40 pm
- Location: Essex
- Contact:
Re: My OSI 610 build - Expansion for the OSI 600
And we're back up and running 
Turns out the FDD side requires PHI2 from the CPU (Pin 39) and there was a bad connection between the CPU and pin 39 of the CPU socket. Now that's remedied I can boot just fine again.
Sometimes it's the simple things that go wrong.
I can get back to looking at FDD's now
- IMG20250717112236.jpg (306.32 KiB) Viewed 1058 times
Turns out the FDD side requires PHI2 from the CPU (Pin 39) and there was a bad connection between the CPU and pin 39 of the CPU socket. Now that's remedied I can boot just fine again.
Sometimes it's the simple things that go wrong.
I can get back to looking at FDD's now
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
-
HigashiJun
- Posts: 2422
- Joined: Fri Jun 19, 2020 7:21 am
- Location: Tokyo
-
rubber_jonnie
- Site Admin
- Posts: 15200
- Joined: Thu Aug 17, 2017 7:40 pm
- Location: Essex
- Contact:
Re: My OSI 610 build - Expansion for the OSI 600
Thanks
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
-
rubber_jonnie
- Site Admin
- Posts: 15200
- Joined: Thu Aug 17, 2017 7:40 pm
- Location: Essex
- Contact:
Re: My OSI 610 build - Expansion for the OSI 600
Wow, another ROM just died, that's 5 bad 28C16's now, up and running on another but the other spares I have, UV erasable 27C16's just won't program. I'll have to try them on the other programmer I got from @exxos see if that works.
IIRC I bought them from Ali Express originally, so that probably speaks to their poor reliability. I think the 27C16's were from eBay. If they don't work on my other programmer then they are toast.
IIRC I bought them from Ali Express originally, so that probably speaks to their poor reliability. I think the 27C16's were from eBay. If they don't work on my other programmer then they are toast.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Re: My OSI 610 build - Expansion for the OSI 600
What programmer are you using now @rubber_jonnie ? Don't think I ever seen a programmer do the C16 / C32 / C64 chips yet.
-
rubber_jonnie
- Site Admin
- Posts: 15200
- Joined: Thu Aug 17, 2017 7:40 pm
- Location: Essex
- Contact:
Re: My OSI 610 build - Expansion for the OSI 600
I was trying with my TL866 Pro, it's 'supposed' to do them but doesn't. Going to try the MQP170 shortly.exxos wrote: Thu Jul 17, 2025 4:14 pm What programmer are you using now @rubber_jonnie ? Don't think I ever seen a programmer do the C16 / C32 / C64 chips yet.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Re: My OSI 610 build - Expansion for the OSI 600
I've no idea if it supports those. I mean is DOS stuff mostly, so it should be old enough..rubber_jonnie wrote: Thu Jul 17, 2025 4:23 pm I was trying with my TL866 Pro, it's 'supposed' to do them but doesn't. Going to try the MQP170 shortly.
You maybe have to build a adapter and pretend its a larger size and hardwire the extra address lines low.. If the devices have the same number of pins, you could use a 32 as a 16 etc that way..