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Reply | Forward Message #2 of 25 |
DMA

How fast can you do DMA with an Apple
II?<br><br>What is the process involved?<br><br>From the A2 ref
manual:<br><br>22 DMA pulling this line low disables the
6502's<br>address bus and halts the microprocessor. This<br>line is
held high with a 3k ohm resistor to +5v.<br><br>Is
that all you have to do? Pull pin 22 low and start
reading/writing?<br><br>How many bytes can you read/write in a second
compared to R/W with the main Apple II
processor?<br><br>Aiihardware




Sun Jul 23, 2000 8:13 am

appleiihardware
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Welcome to the Yahoo! Message Board for A2Hardware...
appleiihardware
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Jul 23, 2000
8:05 am

How fast can you do DMA with an Apple II?<br><br>What is the process involved?<br><br>From the A2 ref manual:<br><br>22 DMA pulling this line low disables the ...
appleiihardware
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Jul 23, 2000
8:13 am

Where can I find out more about this appple II ethernet card?...
phil3690
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Mar 29, 2001
3:54 pm

<a href=http://aiiethernet.tripod.com/ target=new>http://aiiethernet.tripod.com/</a>...
tblazso
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Dec 27, 2001
7:25 pm
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