Search found 102 matches

by tzok
Wed Mar 27, 2019 6:21 pm
Forum: PSU (power supplies)
Topic: 520ST PSU Remake
Replies: 45
Views: 723

Re: 520ST PSU Remake

As far As I remember it needs +/-12V solely for UART (RS232/MIDI), and of course +12V also for floppy. Good thing is, a custom PSU may have two plugs - one for ST and one for SF floppy.
by tzok
Wed Mar 27, 2019 4:35 pm
Forum: PSU (power supplies)
Topic: 520ST PSU Remake
Replies: 45
Views: 723

Re: 520ST PSU Remake

Good replacement is also an Astec AA21430 (it was used in CISCO 1800 series routers). Connector is a regular DIN-7F. Same cable fits also SF3x4 floppy drives (despite they use DIN-5 and don't have -12V line).
by tzok
Fri Mar 22, 2019 12:31 pm
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: Make my own DUAL TOS progamming
Replies: 10
Views: 217

Re: Make my own DUAL TOS progamming

All you really need to have is the TL866's own program (MiniPro). With it you can split images into odd/even bytes and merge them on the right boundaries. You just need to know how to count ;) I've given an explicit calculation example in topic about 6 ROM TOS: https://www.exxoshost.co.uk/forum/memb...
by tzok
Fri Mar 01, 2019 11:32 am
Forum: HARDWARE DISCUSSIONS
Topic: Which 1040 STF is this?
Replies: 46
Views: 1395

Re: Which 1040 STF is this?

I can see P8 at the end, so 8MHz.
by tzok
Thu Feb 28, 2019 4:52 pm
Forum: MONGREL EDITION (version 2)
Topic: ST-IDE-ROM Dev Board v1 - BETA Testers
Replies: 277
Views: 3541

Re: ST-IDE-ROM Dev Board v1 - BETA Testers

Will this board fit into STf "silly" type board (with CPU over mouse/joystick ports)?
by tzok
Mon Feb 25, 2019 10:17 pm
Forum: 3D MODELS
Topic: Filament recommendations
Replies: 10
Views: 895

Re: Filament recommendations

Due to surface structure of original case, colors look different on it than on shiny sample. I was painting with glossy paint and it wasn't too shiny, but I thing a better choice would be semi-gloss/satin, especially for painting on 3D printouts. When painting on plastic you have to use plastic prim...
by tzok
Mon Feb 25, 2019 10:05 pm
Forum: 3D MODELS
Topic: Filament recommendations
Replies: 10
Views: 895

Re: Filament recommendations

I think this may be somehow helpful:
Image

I was painting with RAL7044 and it is at least one tone too light.
by tzok
Thu Feb 21, 2019 8:35 am
Forum: HARDWARE DISCUSSIONS
Topic: Which 1040 STF is this?
Replies: 46
Views: 1395

Re: Which 1040 STF is this?

Later models had same floppy like STes, so it could came out from the factory in this shape (well, not shape, but configuration). So it is the late US (120VAC/60Hz !!!) version.
by tzok
Sat Feb 09, 2019 3:13 pm
Forum: TWEAKS & FIXES
Topic: MANDATORY FIXES
Replies: 1
Views: 369

Re: MANDATORY FIXES

a.d. 4) Gotek units have internal 1k pull-ups on shugart bus, so no need to make this mod for them.