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BLANK 16K
CARTRIDGE |
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C64 MEMORY MAP = |
RAM (8k) |
BASIC (8k) |
RAM & IO (8k) |
KERNAL (8k) |
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$8000-$9FFF |
$A000-$BFFF |
$C000-$DFFF |
$E000-$FFFF |
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8K (standard) |
BANK-1 |
- |
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16K (standard) |
BANK-1 |
BANK-2 |
- |
- |
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8K &
16k (MAX) |
BANK-1 |
- |
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BANK-2 |
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STATUS OF BOTH LINKS |
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EXROM only is GROUNDED |
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GAME & EXROM are both GROUNDED |
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GAME only is GROUNDED |
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LINK on = Grounded |
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LINK off = Open
circuit |
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FOR ADVANCED USERS |
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http://spacetaxi.alphalink.com.au/ |
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EPROM MEMORY |
BANK-1 |
BANK-2 |
BANK-3 |
BANK-4 |
LENGTH |
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$8000-$9FFF |
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2764 |
0000-1FFF |
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2000 |
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$A000-$CFFF |
$8000-$9FFF |
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27128 |
0000-1FFF |
2000-3FFF |
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4000 |
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$E000-$FFFF |
$C000-$DFFF |
$A000-$BFFF |
$8000-$9FFF |
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27256 |
0000-1FFF |
2000-3FFF |
4000-5FFF |
6000-7FFF |
8000 |
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KERNAL |
RAM & IO |
BASIC |
RAM |
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NOTE THAT
I/O USES = $D000- $DFFF |
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| THE BLANK 16K
CARTRIDGE HAS BEEN FACTORY SET, TO BE COMPATABLE WITH THE FOLLOWING EPROMS: |
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2764 or
27C64 (8k) |
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27128 or
27C128 (16k) |
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27256 or
27C256 (32k) |
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27512 or
27C512 (64k) |
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©2007 "SPACETAXI - By The Vortex "
http://members.optusnet.com.au/spacetaxi64/ |
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C64 MEMORY MAP = |
RAM (8k) |
BASIC (8k) |
RAM & IO (8k) |
KERNAL (8k) |
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$8000-$9FFF |
$A000-$BFFF |
$C000-$DFFF |
$E000-$FFFF |
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| (1) |
8K (standard) |
BANK-1 |
- |
- |
- |
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16K (standard) |
BANK-1 |
BANK-2 |
- |
- |
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8K &
16k (MAX) |
BANK-1 |
- |
- |
BANK-2 |
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8K (BASIC) |
- |
BANK-1 |
- |
- |
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| (1) |
EXROM only is GROUNDED, both HIRAM & LORAM are GROUNDED. |
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| (2) |
GAME & EXROM are both GROUNDED, both HIRAM & LORAM are GROUNDED. |
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| (3) |
GAME only is GROUNDED, both HIRAM & LORAM are OPEN circuit. |
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| (4) |
GAME & EXROM are both GROUNDED, HIRAM is also GROUNDED, LORAM is left HIGH |
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C64 FULL MEMORY
MAP |
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0000-3FFF |
16K RAM |
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4000-7FFF |
16K RAM |
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8000-9FFF |
8K RAM |
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A000-BFFF |
8K ROM BASIC |
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C000-CFFF |
4K RAM |
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D000-DFFF |
4K RAM I/O |
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E000-FFFF |
8K ROM KERNAL |
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EPROM Type |
Size — bits |
Size — bytes |
Length |
End
address |
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( @ 1 BIT) |
( @ 8 BITS) |
(hex) |
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1702, 1702A |
2 K |
256 bytes |
100 |
000FF |
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2704 |
4 K |
512 bytes |
200 |
001FF |
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2708, 2758 |
8 K |
1 K |
400 |
003FF |
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2716 |
16 K |
2 K |
800 |
007FF |
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2732 |
32 K |
4 K |
1000 |
00FFF |
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2764 |
64 K |
8 K |
2000 |
01FFF |
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27128 |
128 K |
16 K |
4000 |
03FFF |
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27256 |
256 K |
32 K |
8000 |
07FFF |
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27512 |
512 K |
64 K |
10000 |
0FFFF |
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27C010, 27C100 |
1 M |
128 K |
20000 |
1FFFF |
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27C020 |
2 M |
256 K |
40000 |
3FFFF |
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27C040 |
4 M |
512 K |
80000 |
7FFFF |
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27C080 |
8 M |
1 M |
100000 |
FFFFF |
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©2007 "SPACETAXI - By The Vortex "
http://members.optusnet.com.au/spacetaxi64/ |
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HOME - Click Here to go back to
SPACE TAXI |
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bravenet.com