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Messages - ajhippel

Pages: 1 ... 4 5 [6] 7 8 ... 11
76
Technical Area / Re: roadblasters graphic issue
« on: July 08, 2015, 09:28:53 PM »
try:
remove, clean the legs and insert back again the graphic eproms

77
All the rest / Re: Happy Birthday Capt. Kirk !!
« on: July 07, 2015, 05:21:45 PM »
Happy Birthday, Dirk!
 :)

78
Arcade Lifestyle / Re: Space Duel by F.lli Bertolino
« on: July 02, 2015, 03:38:48 PM »
color vectors are soooo brilliant!
Great! :spaceace:

79
Arcade Lifestyle / Re: Hail to Galaxian... by Namco!
« on: July 02, 2015, 09:38:42 AM »
i used the dc-wiring like here:

https://www.mikesarcade.com/cgi-bin/spies.cgi?action=url&type=pinout&page=Pac.html

it worked well for testing purposes without hacking the board.




80
Arcade Lifestyle / Re: Asteroids Online Kit - i could not resist....
« on: July 01, 2015, 03:17:11 PM »
Can you make it that I can go to a website and change Erik's custom text from anywhere in the world? I have some ideas.

LOL  :lol:

81
Arcade Lifestyle / Re: Asteroids Online Kit - i could not resist....
« on: July 01, 2015, 01:30:02 PM »
everything IS possible...

in the new kits i included the possibility to change the copyright message, there could be a "custom" one as well.
i just need to progam the "edit-custom-message function"

(like in robotron afair)

82
Arcade Lifestyle / Re: Asteroids Online Kit - i could not resist....
« on: June 30, 2015, 11:38:30 AM »
Wow! Any chance this will work on Asteroids Deluxe??

afair it is nearly the same hardware. instead of the analog vector generator it is a digital vector generator.
with some modifications - it will work.
(and i am planning to do a kit for dx as well)


83
Arcade Lifestyle / Re: Asteroids Online Kit - i could not resist....
« on: June 30, 2015, 10:02:33 AM »
thanks for all the feedback :)

i am very happy!

(where's the star field effect by the way?  ::) ;) )
hehehe - a 3d starfield was the first i did, but i couldn't make the "fake 3d" look good.
and forcing the beam from star to star (for only 1 point) is taking a lot of "time" ;)

i was (or am) also thinking about a star-wars scroller ;)


+100 Cool stuff. Which kits are already available, and where? Or did I miss something?
i have pcb's for 2 cpus unitil now...z80 and 6502
until now, kits are available for

gorf
space zap
wizard of wor
eagle
donkey kong
donkey kong jr
donkey kong 3
mario bros.
popeye
scramble
frogger
gyruss
time pilot
Centipede
Asteroids


How can I buy one of your DK kits? Tell me where to send the money!!!!!
We'll contact you ;-)

Great stuff. Did you make some design work in advance on mame?

the programming is completely in mame - usually i change the game-driver source code for my needs (more rom, more ram, serial eeprom)
most of the time the emulation is good enough (no big difference can be seen)
but e.g. on asteroids it was completely different.
i programmed the avg straight away...something like...beam, go to position 100,100...draw a line to 200,200..and so on..
this works on mame..but not on the real thing... because the beam needs some time to go to the position..that is why (on asteroids) they added an "draw a not seen point vector" after the "go to" command that the beam has enough time to go there.

another thing difference is: if you draw a lot of text all around the screen, the beam needs a lot of time to draw it... on mame no flickering can be seen, on the real thing it starts to flicker because the refresh-rate goes down

but i must also admit: without mame - the developing would not be that easy!


Not only is the text scrolling, i see some familiar names passing !
The scrolling text are members here at DLF!

hehehe, these are the greetings - like in the oldschool demos :-)


 

 

84
Arcade Lifestyle / Asteroids Online Kit - i could not resist....
« on: June 29, 2015, 09:23:01 PM »
i really do love vector-games very much....

after finishing the online-kit for asteroids, i could not resist to add some nice "features" (i grew up in the atari st demo-scene)

i thought...if you have to wait until the kit is online...you can show something :)

have look here: :arrow:

https://youtu.be/w62H7MmlNn4


and it's proven... mame really sucks!


85
Arcade Lifestyle / Re: Tempest - bring it back to life
« on: June 25, 2015, 09:33:54 PM »
atari power supplies usually have a "voltage plug"...

with the right plug it will run on 230v... (on your pic is a voltage plug with yellow cables) that means, according to the schematics 120volts source ...

http://arcarc.xmission.com/PDF_Arcade_Atari_Kee/Tempest/Tempest_DP-190-2nd-01B.pdf

in the schematics you can see how to "convert" it if you don't have the right plug anymore...

(upper left part)

the yellow plug has for 120 volts...

* a cable from pin 9 to pint 7
* a cable from pin 8 to pin 4 to pin 1
* a cable from pin 6 to pin 3

to transfer it to 240 volts

* remove the cable of pin 4 from the plug and isolate it - pin 8 to 1 should stay...

* remove the pin 6 from the plug and put it into pin 4.

so there will be only a connection from 8 to 1, from 4 to 3 and 9 to 7.


it's a bit tricky to remove the pins..but worth it...

(normally the european atari cabs has all plugs delivered...only the us not...
so if you have an european atari cab, check if there is a brown or a blue plug... (220 or 240 volts)..
then you can use this one.





86
Arcade Lifestyle / Re: Hail to Galaxian... by Namco!
« on: June 25, 2015, 01:57:15 PM »
staring at the pic i think the following...

bit 1 (started counting from 0) is always high every 2nd line (or every 32 characters)
that means bit 1 (decimal 2) is always "set" to the "normal" char...

that means in the char-roms the address line a4 is high every 2nd line (or 32 characters).

(the address line a0-a2 are the 8 bytes for the charlines, a3=ok,a4 is high)

going more "backwards" in the schematics -> that could mean: whenever the VRA5 is high, the VRAM1 is high as well

it still can be a lot...

but try checking this:
3k 74157 mux
check for a short on 1a(pint2) /1b (pin 3)  (should be open) - but it seems that this one's working

3h Ram 2114
check for a short on VRA5 (pin2) and VRAM1 (Pin12) (should be open)

on a lot of old boards, the 2114 die... in a strange way

if you didn't replace this 2114 yet...try this one...


the prob could (and should) be around this section (3h,3k,4k)


[edit]
It could also be, that the cpu can not write into the char-ram properly...
check also 5j Ls245 (pin 4)
 

87
Arcade Lifestyle / Re: Hail to Galaxian... by Namco!
« on: June 24, 2015, 04:48:57 PM »
are the namco schematics similar to the midways?

i want to have a look ;-)


88
High Score - Are you the best ... around? / Re: Q*bert hi scores
« on: June 18, 2015, 10:46:28 AM »
My Score is about 45000  :o (no, there is no digit missing)... i really suck at qbert :)

since i saw dirk's score i need to regenerate from that shock to play it again :)
 

89
Arcade Lifestyle / Re: My basement featured in a music video
« on: June 17, 2015, 10:55:39 AM »
I like the fact that your arcade basement was used for making a music video. ;)
:spaceace:

90
Technical Area / Re: Picking up a new toy...
« on: June 16, 2015, 03:09:15 PM »
i use a LS86 for combining h+vsync - and for invertion a LS04...

i don't know if the sony can display both...i read in the net that the pvm is a bit picky on signals...

until now it just had some smaller probs if the vfreq is a bit too high

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