search

lfantoniosi / WonderTANG

TangNano 20K cartridge for MSX computers
BSD 2-Clause "Simplified" License
40 stars 16 forks source link

More Omega issues #25

Open JmanNZ opened 2 months ago

JmanNZ commented 2 months ago

Hi My MSX is an Omega with the ram expansion removed. I am using PCB version V2.0b with the WonderTANG.fs firmware from here. Nextor-2.1.1.WonderTANG.ROM.bin is installed.

With the WonderTang in either slot i only get a black screen with what seems to be extra current draw from the PSU. (Bench PSU with meters). If i remove the Nano20k the system starts as normal and current draw is normal. With the Nano20K installed and U4 removed the system starts as normal and the current draw is normal + extra for the WonderTang.

74LVC245's are originals from Element14. I have checked the PCB for any shorts but cannot see any. The wait signal does toggle (U4 removed)

Any help would be greatly appreciated Thank you

JmanNZ commented 2 months ago

It works :) turned out to be low voltage via DC connector. Removed the connector add 5V directly to the PCB and success. Thank You

lfantoniosi commented 2 months ago

You can use a 5.10v supply it will help

Luis Felipe Antoniosi

On Tue, Aug 13, 2024 at 1:54 AM JmanNZ @.***> wrote:

It works :) turned out to be low voltage via DC connector. Removed the connector add 5V directly to the PCB and success. Thank You

— Reply to this email directly, view it on GitHub https://github.com/lfantoniosi/WonderTANG/issues/25#issuecomment-2285719045, or unsubscribe https://github.com/notifications/unsubscribe-auth/ACCJWU5RCXQHPIL3E3IROGTZRHCUJAVCNFSM6AAAAABMLJL5USVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDEOBVG4YTSMBUGU . You are receiving this because you are subscribed to this thread.Message ID: @.***>