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pcfans
Joined: 13 Feb 2014
Posts: 492
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 Posted: Fri Nov 28, 2014 2:15 am Post subject: 1975 BUGGY MOS 6502 TEST OK! UNBELIEVABLE! |
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75 BUG 6502 TEST OK
] THAT IS INCREDIBLE
] THIS COMPUTER BOARD IS CEC-G, APPLE I & II FULLY COMPATIBLE
] WITH 64K RAM
] AND FINALLY THE DATE CODE 4475 GOLD CAP BUGGY MOS 6502 TESTED OK!
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I'm focus on collection of 70s vintage personal computer now. here's the blog of my collection: www.vintage-computer.net (a lots of fine photos) |
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kosmokrator
Joined: 03 Jul 2008
Posts: 4085
Location: Athens-GR
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| Posted: Fri Nov 28, 2014 2:50 am Post subject: |
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why not working??? 
Nice to share with us
Great! |
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bccwchan
Joined: 20 Sep 2004
Posts: 2585
Location: Hong Kong
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| Posted: Fri Nov 28, 2014 2:50 am Post subject: |
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WOO, another unbelievable is you have other device to boot the system up.
Great Job. |
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yy2013
Joined: 12 Sep 2009
Posts: 739
Location: Nagoya, Japan
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| Posted: Fri Nov 28, 2014 7:40 am Post subject: |
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By the way, why do you call the chip "buggy"?
For me, the chip seems to be a genuine MCS6502 from the beginning. |
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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pcfans
Joined: 13 Feb 2014
Posts: 492
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| Posted: Fri Nov 28, 2014 11:52 am Post subject: |
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| kosmokrator wrote: | why not working???
Nice to share with us
Great! |
I think the ROR bug 6502 may act normal in usual actions, but in some special circumstance, program may affected by bugs.
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I'm focus on collection of 70s vintage personal computer now. here's the blog of my collection: www.vintage-computer.net (a lots of fine photos) |
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pcfans
Joined: 13 Feb 2014
Posts: 492
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| Posted: Fri Nov 28, 2014 11:54 am Post subject: |
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| yy2013 wrote: | By the way, why do you call the chip "buggy"?
For me, the chip seems to be a genuine MCS6502 from the beginning. |
This buggy 6502 may act as normal one, but special operations may affected.
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I'm focus on collection of 70s vintage personal computer now. here's the blog of my collection: www.vintage-computer.net (a lots of fine photos) |
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yy2013
Joined: 12 Sep 2009
Posts: 739
Location: Nagoya, Japan
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| Posted: Fri Nov 28, 2014 7:58 pm Post subject: |
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Thank you for the information. It's very useful.
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pcfans
Joined: 13 Feb 2014
Posts: 492
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| Posted: Sat Nov 29, 2014 1:07 am Post subject: |
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| bccwchan wrote: | WOO, another unbelievable is you have other device to boot the system up.
Great Job. |
This computer is China made with full apple II compabiliity.
_________________
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