Author Topic: Atari 8 bit demo, unbelievable....  (Read 42887 times)

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Re: Atari 8 bit demo, unbelievable....
« Reply #60 on: October 23, 2014, 07:39:10 PM »
Short update, picked up 2 4464 RAMs from The post office which I had bought through e-bay from Israƫl of all places...
Did the mod right away when I got home and man is it easy: swap out the two 4416s for the 4464s and solder three small wires, done. 64kB of RAM just like the 800 XL had standard. So basically I now have an 800XL in a much sleeker housing :)

I just wish I knew how to do this BITD.....would have save me from having to buy this ugly thing:


Next SIO2PC.

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Re: Atari 8 bit demo, unbelievable....
« Reply #61 on: October 26, 2014, 12:25:48 PM »
Woohoo, look what was in my mail yesterday.....I finally became a member of the most famous Atari user group ever, ABBUC.

What a crazy exiting feeling to receive floppy's, one of them full of brand new games.....DAMN most of my A8 stuff is in storage but I still got the 600XL and 1050 here, but no SIO cable to connect them....so can't try them now.....VERY tempted to dig up the cable in the storage....

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Re: Atari 8 bit demo, unbelievable....
« Reply #62 on: October 30, 2014, 10:49:54 PM »
Atari XL emulating C64 SID.......skip to 1.00 for some nice Level 42 inspired music :)

https://www.youtube.com/watch?v=-hUPZAtkyEA


OK, I'll admit the original sounds better, but it's still pretty impressive :)

https://www.youtube.com/watch?v=_jwTG8Sw5kk

Etienne MacGyver

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Re: Atari 8 bit demo, unbelievable....
« Reply #63 on: October 31, 2014, 08:08:49 AM »
Not bad indeed !

I love the SID sound, its so iconic  :spaceace:

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Re: Atari 8 bit demo, unbelievable....
« Reply #64 on: October 31, 2014, 02:51:47 PM »
Heh, I really start liking modding the 600XL.

I replaced the OS ROM (which is normally a 128k ROM) with a 27512 EPROM and burned 4 different OS versions in it.

The idea to make two switches to be able to select between the 4 different OSes.

Why ?

Well I found an OS version which had the following improvements over the orignal:
- OPTION key inverted. This means it is no longer neccesary to hold the OPTION key down while booting to disable BASIC. You barely use BASIC anyway. This option is now inverted now which is great.
- it is now possible to do a cold-boot by holding the left shift key while pressing RESET. This saves a lot of turning off/on.
- the SIO routines have been patched which makes it possible to run the SIO port at mugh higher speeds than standard. This is great for use with the Happy Board that is in my 1050 Floppy Disk drive as it will now be in "turbo" made right away and automatically. This rocks !! This also works with SIO2PC etc.

OK so but why 4 OSes ?

Well first of all because I didn't have a 27128 EPROM anyway and also because you can :)
More reasons is that I also included the original OS for the (rare) situations where you need/want 100% compatiblity. The third OS is a patched version of the 400/800 OS so I can run the few games that really need this too (no need for "Translator" dics/files anymore.
The foruth OS is one I found about on the net. It includes the first three mentioned patches plus some more stuff and is especially usefull if you have 256k or more installed because it can automatically set-up RAMdisks etc. So not too usefull now, but well I had to burn the EPROM anyway.

Didn't have time to add the switches yet so I just bent up two pins and slammed the EPROM in the socket and it works great with the first OS I mentioned....

It's great to do hacking and everytime it works straight away. This is a nice change from the arcade stuff ;) ;) ;)

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Re: Atari 8 bit demo, unbelievable....
« Reply #65 on: November 05, 2014, 10:18:53 PM »
Some EXCELLENT home-brew ports of well known arcade games on the A8 platform:


Castle Crisis (=Warlords)
https://www.youtube.com/watch?v=fsGkNe8xcQs

This is AWESOME if you have two sets of paddles you can play 4 player like the cocktail.

(Guess it's handy that both the original arcade machine and the A8 have POKEY for sound :))

Asteroids Emulator:
https://www.youtube.com/watch?v=R-mSZqHk1Us#t=55

Yes....this is an EMULATOR. The 6502 actually runs the original arcade roms code !!!!! It's only emulation is of course the display hardware and sound (yes it has sound, but not on this video).

Tempest Extreem:
https://www.youtube.com/watch?v=LbpN4cMnQrw

Bomb Jack:
https://www.youtube.com/watch?v=KO-cFt8ARX8

F-ing awesome IMHO :)