ZX SPECTRUM - PORTS TABLE
CORRECT ADRESSATION
VALUE PORT
A15 ... A0 READ
WRITE
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255 xxxxxxxx11111111 xxxxxxxxxxxxxxxx 48VRAM
-
31 xxxxxxxx00011111 xxxxxxxxxx0xxxxx KempstIF
-
31 xxxxxxxx00011111 xxxxxxxx0xxxxxx1 Kempst-M
-
254 xxxxxxxx11111110 xxxxxxxx1xxxxxx0 48ULA-M
48ULA-M
254 xxxxxxxx11111110 xxxxxxxxxxxxxxx0 48ULA
48ULA
xxxxxxxx0BA11111 xxxxxxxx0xxxxxxx
Gama8255 Gama8255
32765 0111111111111101 0xxxxxxxxxxxxx0x 128k/+2PAG*
128k/+2PAG
32765 0111111111111101 01xxxxxxxxxxxx0x +2a/+3PAG
+2a/+3PAG
65533 1111111111111101 11xxxxxxxxxxxx0x AYdataR
AYadr
49149 1011111111111101 10xxxxxxxxxxxx0x -
AYdataW
xxxxxxxx0BA11111 xxxxxxxx0xx111xx
MB018255-1 MB018255-1
xxxxxxxx0BA11011 xxxxxxxx0xx110xx
MB018255-2 MB018255-2
23 xxxxxxxx00010111 xxxxxxxx0xx101xx MB01memsel*
MB01memsel
19 xxxxxxxx00010011 xxxxxxxx0xx100xx stav.disk
mot+sel+rez
xxxxxxxx0BA01111 xxxxxxxx0xx011xx
MB01WD2797 MB01WD2797
227 xxxxxxxx11100011 xxxxxxxx11100011
- divIDEcntrl
xxxxxxxx101CBA11 xxxxxxxx101xxx11
IDEregs IDEregs
xxxxxxxx110CBA11 xxxxxxxx110xxx11
IDEregs-MB IDEregs-MB
xxxxxxxx10000BA1 xxxxxxxx10000xx1
D40/80FD D40/80FD
xxxxxxxx10001BA1 xxxxxxxx10001xx1
D40/80po D40/80po
xxxxxxxx1001C001 xxxxxxxx1001xxx1
D40/80en/di D40/80en/di
xxxxxxxx0AB11111 xxxxxxxx0xxxxxxx
D40/80-8255 D40/80-8255
239 xxxxxxxx11101111 xxxxxxxx1110xxxx
- ISO ROM 128
63 xxxxxxxx00111111 xxxxxxxxx0xxxxxx LIGHT PEN(DK)
-
250 xxxxxxxx11111010 xxxxxxxxxxxxx0x0
- Proface/Keyface
31 xxxxxxxx00011111 xxxxxxxx00011111 A-MOUSE
-
64223 1111101011011111 xxxxx0x011011111 K-MOUSEturboB
-
64479 1111101111011111 xxxxx0x111011111 K-MOUSEturboX
-
65503 1111111111011111 xxxxx1x111011111 K-MOUSEturboY
-
243
xxxxxxxx11110011 xxxxxxxx11110011 FP Status FP
Control
247 xxxxxxxx11110111 xxxxxxxx11110111 FP Data
FP Data
Free ports:111xxx11, value xxx can be 1-7. (port #FF is attribute port)
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Russian K-MOUSE (colision with KEMPSTON(31),D40 and IDEregs-MB)
64223 1111101011011111 xxxxx0x01x0xxxx1 K-MOUSE_B -
64479 1111101111011111 xxxxx0x11x0xxxx1 K-MOUSE_X -
65503 1111111111011111 xxxxx1x11x0xxxx1 K-MOUSE_Y -
K-MOUSE TURBO use full adressation (colision only with IDEregs-MB ports)
Original Kempston mouse adressation:
64223 1111101011011111 xxxxxx10xx0xxxxx K-MOUSE_B -
64479 1111101111011111 xxxxx011xx0xxxxx K-MOUSE_X -
65503 1111111111011111 xxxxx111xx0xxxxx K-MOUSE_Y -
K-MOUSE TURBO ports:
All ports use full adressation
-port 64223 = buttons
-port 64479 = X (0-255)
-port 65503 = Y (0-255)
Port 31 A-MOUSE(support on K-MOUSE TURBO interface):
-use full adressation
Keyboard Proface ports:
-Keyb.Proface can be programmed by writing to port 250 ( FA )
-read data from Keyb.Proface on bit D7 on port 254 ( FE )