Search found 74 matches

by superfo
Mon Aug 14, 2023 5:50 am
Forum: Hardware
Topic: SD81 Booster
Replies: 79
Views: 33237

Re: SD81 Booster

i'm in for one with case. Thanks
by superfo
Thu Jul 28, 2022 4:53 pm
Forum: Hardware
Topic: Is it possible to add All-RAM to a +2?
Replies: 3
Views: 1362

Re: Is it possible to add All-RAM to a +2?

It can be done, see "allram.pdf" from this link (it is for Harlequin 128 issue 3H but can modify for ZX +2)

https://onedrive.live.com/?id=E0ADBB58A ... 58ADB8D869

If you don't want allram mode, just only need to use zx +2 with floppy disk interface it will more easy
by superfo
Thu Jul 28, 2022 7:11 am
Forum: ZX Spectrum Lounge
Topic: Superfo Harlequin 128 Issue 4 run CP/M Plus
Replies: 8
Views: 7917

Re: Superfo Harlequin 128 Issue 4 run CP/M Plus

There is "Superfo Harlequin 128 issue 4A" PCB on SellMyRetro or eBay. It support ALLRAM mode so if you add Floppy Disk Interface like this one, it can run CP/M Plus 1.0 same as ZX Spectrum +3 or it can run CP/M 2.0 version for ZX Spectrum +3 https://onedrive.live.com/?id=E0ADBB58ADB8D869%21206782&ci...
by superfo
Sat Mar 05, 2022 6:06 am
Forum: Hardware
Topic: Need help reverse engineering Timex Store Demonstrator ROM file
Replies: 77
Views: 15397

Re: Need help reverse engineering Timex Store Demonstrator ROM file

Someone from this forum reverse engineer long time ago
by superfo
Sun Nov 07, 2021 6:40 am
Forum: ZX Spectrum Lounge
Topic: Superfo Harlequin 128 Issue 4 run CP/M Plus
Replies: 8
Views: 7917

Re: Superfo Harlequin 128 Issue 4 run CP/M Plus

please can you send me the schematic of the superfo harlequin 128 issue4 link is invalid mira Board is no longer available but ZX Nuvo can run CP/M too https://onedrive.live.com/?id=E0ADBB58ADB8D869%21210263&cid=E0ADBB58ADB8D869 https://onedrive.live.com/?id=E0ADBB58ADB8D869%21210938&cid=E0ADBB58AD...
by superfo
Wed Jan 20, 2021 9:03 am
Forum: ZX Spectrum Lounge
Topic: New (to me Speccy)
Replies: 4
Views: 3659

Re: New (to me Speccy)

Buy small monitor like this one, it support both PAL and NTSC

https://www.amazon.com/Hikity-1024X600- ... 720&sr=8-3
by superfo
Fri Dec 25, 2020 8:08 pm
Forum: Hardware
Topic: ZX Nuvo 48 Help
Replies: 8
Views: 3519

Re: ZX Nuvo 48 Help

US3,4,56 are RAM
by superfo
Sun Dec 20, 2020 11:34 pm
Forum: Hardware
Topic: ZX Nuvo 48 Help
Replies: 8
Views: 3519

Re: ZX Nuvo 48 Help

You can get document from here.

https://onedrive.live.com/?id=E0ADBB58A ... 58ADB8D869

To make it works you need to program U2, U5, U59 which require programmers.
by superfo
Sun Dec 20, 2020 9:13 pm
Forum: Hardware
Topic: BASICare microsystem
Replies: 10
Views: 5031

Re: BASICare microsystem

Attached is the scan document of this interface.