I found this game doesn't work on my CPC 6128+ with Gotek HXC and C4CPC cartridge.
The same game (CNGSoft 2014 version) works properly on standard CPC 464 and 464+
May you test on your 6128+ ?
Or is there a patch for it ?
Thanks
I can give it a go later when I get back from the office. I'm fairly certain I have a working version for a 6128+ :)
Thanks Shaun
Quote from: DanyPPC on 17:24, 15 December 17
Thanks Shaun
I had no luck with this at all so far i'm afraid on my 6128+
I loaded two versions. The first one was Two Mag's crack, that brought me to the title screen, but crashed as soon as the game started.
The second was CNGSoft's latest one. That just nuked with a reset after I went to start the game.
My memory must have been playing it on an old CPC6128 and not the plus. :(
Tested with both a Gotek HXC as well as the M4 board. Both had the same results.
Try with the french downgrade cartride if it work.
Oh, I forgot I have a C4CPC downstairs.
Can try it!
No dice. Tried rb patched firmware
Firmware 3.16 and 3.15 also didn't work unfortunately.
Yes, crashing for me too after the title screen.
Tried it on my 6128 Plus from the M4 board.
Also tried it on the same computer loading via GOTEK (FlashFloppy firmware).
Cheers,
Shane
Exactly what happens on my machine.
I was looking for a confirmation.
That's pity because Eliminator is a good game on Amstrad CPC.
It requires a fix on 6128+
Thanks to all !
Quote from: Shaun M. Neary on 01:20, 16 December 17
No dice. Tried rb patched firmware
Firmware 3.16 and 3.15 also didn't work unfortunately.
What patch? It no have burnin rubber menu. I speak about these: http://cpcwiki.eu/imgs/7/7a/Basic_%28F%29_%28White_Label%29.zip
There's a few patched firmwares other than the white label one out there.
None of them work in this instance.
The White label one is also pretty useless for those who can't use awkward French keyboards. :laugh:
Have you tried the versions by " XOR " or " Nicholas CAMPBELL " ?
Now i test it, thanks !
Nothing to do, both cpr and dsk/hfe didn't work on CPC 6128+
The game reset the machine after start on the menù.
Thank you Phantomz for you interest.
Quote from: DanyPPC on 17:50, 16 December 17
Nothing to do, both cpr and dsk/hfe didn't work on CPC 6128+
The game reset the machine after start on the menù.
Thank you Phantomz for you interest.
No problem, sorry they didn't work, I thought they would. ???
I can't test on a real machine at the moment, but I changed the xor menu in the cpr and it worked in MESS emulator, so thought it was going to work. ::)
The strange thing is that WinAPE in 6128+ configuration runs the game without problems
but the emulator is not the real machine.
Another thing I thought of (as I think it's a hardware issue), was clearing the additional 64k using the multiface but I got the same result there too.
It's definitely interesting all the same.
O.k i take a look at the game inside when i have spare time.
Maybe there are also other games that do not run on 6128+ but Eliminator is the first one i found.
Is a hardaware bus problem:
in
&82f9 call &4fef
org #4fef
ld bc,#fbed
in a,(c)
rrca
ret c
pop hl
ld sp,#14fc
ret
In plus computers the in a,(c) returns &78 Thats made he not execute the instruction ret c instead it execute the last ret returning to &0000 restarting the computer.
In normal 6128 (and winape) it recieve a &ff executing the ret c and returning to &82fc
Try change the ret c to ret. d8->c9
Yes, now it works !
Tested successfully on my 6128+ machine.
Thank you very much Dragon !
Nice work @dragon (http://www.cpcwiki.eu/forum/index.php?action=profile;u=251) 8)
I noticed that you worked on the original disc.
I've applied your fix and also the level 12 bug fix to the XOR version, I did this so we have a version with a Trainer and also so that we can have it in cpr format. ;D
I've tested the cpr in my 6128+ and it works great so the disc should work too. ;D
I confirm, this patched version works great in C4CPC and HxC Gotek,
many thanks to both Dragon and Phantomz !
Nice work, Dragon! 😊
And to Phantomz as well to make it for the GX4000
You guys are awesome!
Sent from my ONEPLUS 3t using Tapatalk
That is the teory explanation copy paste from grimware site:
When no device is driving the bus, it's lines are left like disconnected, floating in the air, therefore no real value is fixed on the bus. Usually, no device should try to read the bus in such a state because there's actually nothing to read on it. Nevertheless, if you try do so, for example from BASIC with a PRINT INP(&FFFF), a value is returned. So where this value comes from?
In order to register a 0 on a line, current has to be actively sunk out. If the bus is read while all devices are tri-stated, nothing sinks the current, thus &FF is read. But the more stuff is connected to the bus, the more stray capacitance gets added to the lines, the slower the lines will be able to change their state. For example, if the bus contains &00 just before being left un-driven, it will take some time before the stray capacitance rise to 1 again. If the bus is read in the meantime, the voltage won't cross the TTL high level and a zero will be read.
On the Amstrad, there's only once case where you have to deal with this floating bus value, which is when you want to use the Z80 vectorized interrupts mode (See the Z80 IM2 documentation), and that's all.
The floating value on the databus of a bare CPC is usually &FF, but may also even changes periodically (especially, for some unknown reason at the moment, on CPCs fitted with CRTCtype 1). On a bare Amstrad Plus, this is usually &78 (no idea why it's not &FF, I bet there's some ASIC mystery involved here).
Any program relying on a floating bus value prediction WILL FAIL. Any programmer doing such crap will be flamed all over the intarweb and fucked in mighty hardware scrollers! I warned you!
Quote from: Shaun M. Neary on 23:23, 17 December 17
Nice work, Dragon! :)
And to Phantomz as well to make it for the GX4000
I hadn't made it GX4000 friendly, it was now plus friendly with a Trainer and in cpr format for quick easy loading. ;)
I've looked into making this GX4000 friendly.
I've made the Trainer GX4000 friendly, it is now also in English, I've removed the level code list as unsure how to get these changed at the moment.
However the game is fully playable from start to finish including the highscore table, therefore @remax (http://www.cpcwiki.eu/forum/index.php?action=profile;u=314) may wish to add this game. ;D
The GX4000 version is now joypad only, pause the game with joypad button 2, joypad button 1 or 2 to unpause, you can also press joypad button 2 to turn music on or off.
Whilst paused you can press the console pause button to quit game, this only works in a normal game with no trainer cheat option on.
Hopefully the codes can be sorted at a later time, however like I said the game is fully playable on the GX4000 now. ;D
Codes? I think i view it in plain text right before the subrutine
Quote from: dragon on 13:24, 18 December 17
Codes? I think i view it in plain text right before the subrutine
You type them on the main screen to load levels.
02 = BLOSP
03 = ASDEL
04 = XPLRT
05 = GLPWM
06 = EOCKQ
07 = LFPRT
08 = WMCPR
09 = SPQNJ
10 = ZPEML
11 = ELVPQ
12 = CPEMF
13 = APXYQ
14 = PWVAR
In the game it show as " BLOSÐASDEÌXPLRÔGLPWÍEOCKÑLFPRÔWMCPÒSPQNÊZPEMÌELVPÑCPEMÆAPXYÑPWVAÒ ".
The first four letters are readable with the fifth being in code, for example P = D0, R = D2, T= D4, G = C7, F = C6.
I can change the fifth coded letter ok, but if I change the first four the code will not work, we need to change these code to some that we can enter with the game pad/s. ;)
I think when you enter a letter in &5688:
He read buffer keyboard code: in form FF FF FF FF FF FF FF FF FF FF
0 1 2 3 4 5 6 7 8 9 ->keyboard line.
Then, he read compare these line/key in ram from &569d-&56cf
ram content:
08 DF 06 BF 07 BF 07 DF 07 FB 06 DF 06 EF 05 EF 04 F7 05 DF 04 DF 04 EF 04 BF 05 BF 04 FB 03 F7 08 F7 06 FB 07 EF 06 F7 05 FB 06 7F 07 F7 07 7F 05 F7 08 7F
So you need select and change the letters to equivalent in joystick.
09 df ->button 2 =41 in pasword zone
09 f7 ->right=42 in pasword zone
09 fb ->left=43 in pasword zone
09 fe->up=44 in pasword zone
09 fd->down=45 in pasword zone
And then put the codes in the pasword zone. (take mind the encripted) number+&80. they should work.
Just FYI, that's not encryption, the high bit is set as an end-of-string marker. The firmware uses the exact same scheme for RSX name tables.
Quote from: Phantomz on 17:58, 17 December 17
Nice work @dragon (http://www.cpcwiki.eu/forum/index.php?action=profile;u=251) 8)
I've applied your fix and also the level 12 bug fix to the XOR version, I did this so we have a version with a Trainer and also so that we can have it in cpr format. ;D
I have patched @cngsoft (http://www.cpcwiki.eu/forum/index.php?action=profile;u=191)'s crack of
Eliminator and uploaded it to NVG (ftp://ftp.nvg.ntnu.no/pub/cpc/games/arcade/eliminat.zip). However I don't have a real Plus machine to test it. :(
Thanks very much for fixing this bug, @dragon (http://www.cpcwiki.eu/forum/index.php?action=profile;u=251)!
Hello Nich, i tested successfully this new patched version on my CPC 464+ 6128+ and MiST with FPGA Amstrad CPC 6128 Core !!!
Has this version the gxf bug patched on level 12 ?
Thank you very much.
Quote from: DanyPPC on 18:31, 23 December 17
Hello Nich, i tested successfully this new patched version on my CPC 464+ 6128+ and MiST with FPGA Amstrad CPC 6128 Core !!!
Great news!
QuoteHas this version the gxf bug patched on level 12 ?
Yes, the graphical glitch on level 12 has been fixed as well. :)
Very well, tested level 12, gfx OK !
;)
Quote from: Nich on 17:02, 23 December 17
I have patched @cngsoft (http://www.cpcwiki.eu/forum/index.php?action=profile;u=191)'s crack of Eliminator and uploaded it to NVG (ftp://ftp.nvg.ntnu.no/pub/cpc/games/arcade/eliminat.zip). However I don't have a real Plus machine to test it. :(
Thanks very much for fixing this bug, @dragon (http://www.cpcwiki.eu/forum/index.php?action=profile;u=251)!
I don't think is a bug really. Is programed to made a reset if he detect the bus is not empty in certain cases. I don't know the reason maybe antipiracy, or maybe can be something that during development.They have some device attached in the bus and when he send some signal to the bus they can be force jump to 0000, (but with another rom loaded externally in 0000) how knows. I don't know if originally the game work with a cpc with crtc 1.
Quote from: Nich on 17:02, 23 December 17
I have patched @cngsoft (http://www.cpcwiki.eu/forum/index.php?action=profile;u=191)'s crack of Eliminator and uploaded it to NVG (ftp://ftp.nvg.ntnu.no/pub/cpc/games/arcade/eliminat.zip). However I don't have a real Plus machine to test it. :(
Thanks very much for fixing this bug, @dragon (http://www.cpcwiki.eu/forum/index.php?action=profile;u=251)!
Thanks for this @Nich (http://www.cpcwiki.eu/forum/index.php?action=profile;u=53) , is it possible to make the Trainer GX4000 friendly, Mainly the " First Stage " option, maybe make it so can choose with the dpad instead of needing to press a key.
The rest of the options can have 1 for Yes, 2 for No.
I know @dragon (http://www.cpcwiki.eu/forum/index.php?action=profile;u=251) does this for level select's on XOR games. ;)