Author Topic: X-MEM, a new memory expansion for all CPC.  (Read 111294 times)

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Offline SyX

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #225 on: 00:17, 04 July 14 »
Yes, you need these holidays... for coming with new AMAZING ideas :)

Offline Ast

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #226 on: 00:30, 04 July 14 »
Maybe a graphics card for our cpc  ;D  Who knows ?
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Offline TotO

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #227 on: 00:33, 04 July 14 »
Bufff, I have counted wrong and I'm not on the top page.  :-\
Thank you and we will see next!
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Offline joska

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #228 on: 01:21, 06 July 14 »
So what am I doing wrong? Can't seem to flash any ROMs. I've tried with "|flash" from BASIC and the flasher utility. I've downloaded SymbOS and Protext, and whenever I try to flash one of them the screen is instantly garbled and the ROM title are seemingly random characters.

I tried to save one of the ROMs and write it back, that worked perfectly. So I'm doing something wrong with the downloaded ROMs. Should they be converted or altered in any way? They are all 16384 bytes.

To get these on a CPC floppy I saved them to a 720Kb MS-DOS disk using mtools on my Linux PC. I only have a USB floppy so I can't write AMSDOS floppies directly. Then I used SymCommander under SymbOS 2.1 to copy them to an AMSDOS floppy, rebooted to BASIC and attempted to flash them.

Offline Joseman

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #229 on: 02:26, 06 July 14 »
hi

take care that the files doesn't have the AMSDOS header... they have to be pure bin files.

i remember extracting the amsdos header with  an hex editor.

i think that this can be the problem...

Offline Gryzor

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #230 on: 14:39, 06 July 14 »
80, eh? Niiiice!

Offline joska

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #231 on: 16:38, 07 July 14 »
take care that the files doesn't have the AMSDOS header... they have to be pure bin files.


Yes, that could be it. I tried to LOAD them into RAM in order to have a quick peek at the header, and LOAD filename,<addr> failed with a syntax error while a simple LOAD filename worked fine. The ROM I saved could be loaded at a specific address, so there's definitely a difference.

Offline TotO

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #232 on: 16:43, 07 July 14 »
Hello !

I have run the INSTALL process for installing the FW3.15, FW3.15 EXP and BASIC to your board before shipping it.
So, there is no doubt about the fact that it work properly. :)

From the X-MEM floppy, run MONITOR and let me know what you see for the ROM that you have tried to burn.
(you will see if the header is OK or wrong)

Else, you can try to run the INSTALL process and ask for installing the optional CP/M ROM.
That will add the system to ROM8 and ROM9. Then, you can start CP/M using |EMS.
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Offline joska

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #233 on: 18:12, 07 July 14 »
I have no doubt that it works :) It's my lack of understanding of the CPC that's the problem. I have almost for sure messed up the ROM files while transfering them to an AMSDOS disk.

Using flasher.bas does not work with these files. It crash with a syntax error at line 1100 (load file$,&4000).
« Last Edit: 18:14, 07 July 14 by joska »

Offline TotO

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #234 on: 18:36, 07 July 14 »
haha... I suggest that your filename is not standard. (to produce a syntax error)

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Offline joska

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #235 on: 18:49, 07 July 14 »
LOAD "PROTEXT.ROM",&4000 crash.
LOAD "PROTEXT.ROM" works.

Offline TotO

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #236 on: 19:00, 07 July 14 »
funny.  ;D

Is the tool that you have used to put the ROM to the floppy ask for the ROM address when it add the header?
If yes, is this value equal to &4000 by default? I remember than CPC DiskXP put &6000 by deflault, so programs only load half of the ROM and override the program into the memory... Make it crashing.
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Offline joska

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #237 on: 19:23, 07 July 14 »
I used SymCommander to copy the files from an MS-DOS formatted 720kb floppy to an AMSDOS floppy. I don't know if SymCommander altered the files in any way.
Today I used DskManager on my office PC to write the ROM files to a newly created dsk image. I then mounted this image in WinAPE and I could load them to a specific address. I also tested the ROMs.
I will write the image to a floppy tonight and test the ROMs. I'm quite sure it will work.

Offline joska

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #238 on: 20:47, 07 July 14 »
I will write the image to a floppy tonight and test the ROMs. I'm quite sure it will work.

It did. So somewhere between writing the ROMs to a MS-DOS disk on my laptop and writing them to an AMSDOS disk on my CPC the files got corrupted.

Offline Prodatron

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #239 on: 10:03, 08 July 14 »
I used SymCommander to copy the files from an MS-DOS formatted 720kb floppy to an AMSDOS floppy. I don't know if SymCommander altered the files in any way.
SymCommander doesn't alter anything when copying files. The only thing which may be altered is the size of a file, as in AMSDOS you always have to round the size up to 128byte aligned values.

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Offline Tai

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #240 on: 20:46, 09 July 14 »
ohh! I just received my X-MEM board!!

What an amazing piece of wonderfulness :)

Thanks to all people involved in this project  8)

Offline pelrun

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #241 on: 06:54, 10 July 14 »
Me too! YAAAAAAAAAA...


Couldn't help myself, had to open the package at work and look at all the shiny.


...AAAAAAY!

Offline CPC_Fan

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #242 on: 12:23, 10 July 14 »
TotO - Is it still possible to order an X-Mem board at the moment? I only ask as when I go to the website, it says that the store is closed.

Offline TFM

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #243 on: 12:24, 10 July 14 »
Let em have their summer vacation (see TotO's post before). They will open again soon. :-)

TFM of FutureSoft
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Offline TotO

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #244 on: 12:28, 10 July 14 »
If I don't close it, peoples will not understand that they will have to wait 1 month more than others.
And I prefer to don't back from holidays with tons of pre-orders and money on my Paypal account.

You will be able to pre-order again in August, and get boards in the same delay. :)
Thank you for understanding,

  TotO.
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Offline CPC_Fan

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #245 on: 12:33, 10 July 14 »
Thanks for the information TotO. Sorry I must have somehow missed your post about taking a holiday. I just hope that when the store is open again, that I have still got the money to purchase one from you....

Offline TotO

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #246 on: 12:36, 10 July 14 »
If you really want it, there is no doubt.  ;)

« Last Edit: 13:15, 10 July 14 by TotO »
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Offline pelrun

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #247 on: 07:28, 11 July 14 »
Well, I got my X-MEM working eventually, it was a bit of a trial because my expansion port has never had anything plugged into it ever, so cleaning it successfully was a pain. Ended up scratching at the pads with a screwdriver to get them to shine up (my fibreglass cleaning pen's gone missing again.)


Any way to get the mode-2 boot screen using a different colour scheme though? Not being gold on blue just looks *wrong*.

Offline TotO

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #248 on: 09:15, 11 July 14 »
cleaning it successfully was a pain. Ended up scratching at the pads with a screwdriver to get them to shine up (my fibreglass cleaning pen's gone missing again.)
Using 70° alcohol on cotton swab is enough to clean properly a 30 years old connector. Then, plug/unplug some times the edge connector.
A screwdriver may damage it...

Any way to get the mode-2 boot screen using a different colour scheme though? Not being gold on blue just looks *wrong*.
The FW 3.1 boot on MODE 2 using readable CP/M styled bright Platinum on blue (yes...white)
Yellow is a pain to read in mode 2, but you can use the middle switch to back to the original FW and see if your colors are ok.
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Offline pelrun

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Re: X-MEM, a new memory expansion for all CPC.
« Reply #249 on: 14:24, 11 July 14 »
Fine, I'll figure out the palette change myself, it won't be hard to find.


A bigger issue is my Mini-booster stops being visible if the X-MEM is also plugged in - inp(&ff00) gives 170 if the minibooster is alone, and 255 if the X-MEM is present, and the Arkos RSXes in rom don't detect it. Are they incompatible or is there something going wrong with my setup?