upgrading 464 costs.

[TFM]

Well it's tested with my Acid Inside board. and bad news it seems.


the RamDisc integration requires AmsDOS or compatible Disc OS in Slot 7. As soon as this is lower than 7, then the machine hangs as soon as |c is executed


Craig

In case of RDOS, the RDOS must only have a smaller number than the DOS itself. The DOS number can be free choosen. !C works - that much about the regular CPC. But... it ... Should be the same with FW3.15.




Very imortant: The PSU of the CPC is not enough for all MX4 stuff, you all need a PSU for the MX4 when having more than one card on it.

[TotO]

I have 4 boards on my MotherX4 and my CPC is enough to power all of them.
But, if peoples got a tired CTM +5V, it's better to use an external PSU.
(last but ot least, that allow to keep alive the RAM Drive when turning off the CPC)

[Bryce]

I have 4 boards on my MotherX4 and my CPC is enough to power all of them.
But, if peoples got a tired CTM +5V, it's better to use an external PSU.
(last but ot least, that allow to keep alive the RAM Drive when turning off the CPC)

Two questions:
1 - Have you documented exactly how much current each of your expansions needs?
2 - Does the MX4 have a diode to stop the external supply keeping the CPC alive if it's poewered down? (Yes, although I own one, I've never looked closely at the circuit)

Bryce.

[TotO]

1- No, because most peoples don't read the user notice. So, writing the technical one... 
- MiniBooster is around 150mA.
- X-MEM range is 60mA/100mA depending the usage.
- PlayCity is around 70mA.

2- 2x schotty diodes are used to auto-select the best power supply and protect from revert current up to 3A.
5V/2A is printed on the board. That is enough to power all the expansions and extra on the pass-through connector.
The PSU should stop to work before damaging the MX4 (and the CPC) if too much current is needed.

If for any reason, peoples want to only supply the MX4 with an external 5V PSU, you should remove the diole farthest from the power jack connector.

[Bryce]

2- 2x schotty diodes are used to auto-select the best power supply and protect from revert current up to 3A.
5V/2A is printed on the board. That is enough to power all the expansions and extra on the pass-through connector.
The PSU should stop to work before damaging the MX4 (and the CPC) if too much current is needed.

Nice design.

Bryce.

[opqa]

Just to say:  I have completely lost all understanding of this topic now.  It's all gone super technical and way over my head but you guys do what you gotta do to run all your tests and stuff and I'll go away and await the results. 

Just investigating a fast way to transfer ROMS to the X-MEM via the MiniBooster in a disk-less machine like your CPC464.
BTW, up till now, Are you still using tapes to load games or do you have/use some kind of tape adapter?

[Carnivius]

Just investigating a fast way to transfer ROMS to the X-MEM via the MiniBooster in a disk-less machine like your CPC464.
BTW, up till now, Are you still using tapes to load games or do you have/use some kind of tape adapter?

A mixture.  I tend to use tapes for the games I have the original tapes of and for others I try tusing Tapdancer on my Android phone connected to my 464 via a car stereo cassette adaptor.  Not highly reliable but some games work fine and it's also how I test how my own graphics look alright on true CPC hardware.

[opqa]

A mixture.  I tend to use tapes for the games I have the original tapes of and for others I try tusing Tapdancer on my Android phone connected to my 464 via a car stereo cassette adaptor.  Not highly reliable but some games work fine and it's also how I test how my own graphics look alright on true CPC hardware.

Mmm, Not highly reliable? Have you ever tried fast loaders like the OTLA project using this adapter? It would be worth using them to upload ROMS via tape. Could you try with the sample attached? It's in mp3 format, you might reproduce it with the computer or mobile. I attach it also in wav format just in case. It should load a snapshot of Game Over game in less than 1 min.