Gniazdo Cartridge (ST)

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Miker (Dyskusja | wkład)
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Wersja z dnia 04:38, 10 maj 2006

Plug-in cartridge port

This port provides a plug-in cartridge facility that does not sense in hardware the presence of a cartridge. The cartridge ROM occupies addresses in the range: $FA0000 (16384000 ) to $FBFFFF (16515071) – maximum 128 Kbytes

40 way 40S socket

function pin function
power + 5 VDC 2 <img src="images/b/b0/Edge_conn_40_way_vertical.png" width="133" height="451"> 1 power + 5 VDC
data 15 4 3 data 14
data 13 6 5 data 12
data 11 8 7 data 10
data 9 10 9 data 8
data 7 12 11 data 6
data 5 14 13 data 4
data 3 16 15 data 2
data 1 18 17 data 0
address 15 20 19 address 13
address 14 22 21 address 8
address 9 24 23 address 7
address 10 26 25 address 6
address 12 28 27 address 5
address 4 30 29 address 11
address 3 32 31 ROM3 select
address 2 34 33 ROM4 select
address 1 36 35 upper data strobe
ground 38 37 lower data strobe
ground 40 39 ground

Only the lower 15 address lines are available to the ROM cartridge which does not provide a ‘write’ line.



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