forked from Apple-2-HW/gp2io
Kfest 2016
This commit is contained in:
parent
3ef8417fc5
commit
38211a4753
22
README.md
22
README.md
@ -38,7 +38,7 @@ The first two buttons addresses are shared with the Apple keys, so it's best not
|
||||
PB2 = $C063 ; game Pushbutton 2 (read) <- Our victim
|
||||
|
||||
PB3 (GS only) = $C060 ; game Pushbutton 3 (read)
|
||||
$C060 bit 7 = data from cassette on Apple II, II+, IIe
|
||||
$C060 bit 7 = data from cassette on Apple II, II+, IIe
|
||||
|
||||
Button 3 and the cassette share the same memory address $C060. So, we could toggle pin 9 on the game port (PB3) to load data directly into the memory address for the built-in cassette routines. But that pin is only on the GS. Poo. And the GS, having no cassette input, has no cassette routine in ROM. Double poo.
|
||||
|
||||
@ -393,7 +393,7 @@ Here is a buffered I/O routine for minimally interactive data transmission betwe
|
||||
081D- A5 08 LDA $08 ; load Accumulator with new buffer length
|
||||
0820- D0 EC BNE $080E ; if there's more to come, loop (betweenbytes)
|
||||
0822- 20 8E FD JSR $FD8E ; last byte. print CF/LF
|
||||
0825- 60 RTS ; return
|
||||
0825- 60 RTS ; return
|
||||
|
||||
|
||||
GETLINE
|
||||
@ -415,7 +415,7 @@ GETLINE
|
||||
0846- A5 06 LDA $06 ; load buffer pointer into Accumulator
|
||||
0848- C5 07 CMP $07 ; compare with message length
|
||||
084A- D0 EE BNE $083A ; if not at end of message, loop to (keybuffer)
|
||||
084C- 60 RTS ; return
|
||||
084C- 60 RTS ; return
|
||||
|
||||
QUERY BUFFER LENGTH
|
||||
returns buffer length in $08
|
||||
@ -427,7 +427,7 @@ returns buffer length in $08
|
||||
0858- 20 4A 03 JSR $034A ; CTS - ready for response byte with buffer length
|
||||
085B- F0 F0 BEQ $084D ; if there's nothing in the buffer, loop until there is
|
||||
085D- 85 08 STA $08 ; put the byte in $08
|
||||
085F- 60 RTS ; return
|
||||
085F- 60 RTS ; return
|
||||
|
||||
|
||||
|
||||
@ -444,11 +444,7 @@ EF: ReadByte, SendByte
|
||||
So, What Can It Do?
|
||||
===
|
||||
|
||||
<<<<<<< Updated upstream
|
||||
With a general purpose gateway to I2C, SPI and UART devices (among others), GP2IO lets the Apple II access a variety of different inputs and outputs, from sensors and alternate controllers to external data displays.
|
||||
=======
|
||||
With a general purpose gateway to I2C, SPI and UART devices (among others), GP2IO lets the Apple II access a variety of different inputs and outputs, from sensors and alternate controllers to external data displays.
|
||||
>>>>>>> Stashed changes
|
||||
|
||||
Some use case ideas include:
|
||||
- light indicator for disk activity, RWTS function
|
||||
@ -510,12 +506,4 @@ Entries will be judged on the following criteria:
|
||||
Judges:
|
||||
- Charles Mangin
|
||||
- Mark Pilgrim
|
||||
- Bill Martens
|
||||
|
||||
|
||||
|
||||
|
||||
<<<<<<< Updated upstream
|
||||
|
||||
=======
|
||||
>>>>>>> Stashed changes
|
||||
- Bill Martens
|
Loading…
Reference in New Issue
Block a user