mirror/Arduino-USB-HID-RetroJoystickAdapter
1
0
Fork 0
mirror of https://github.com/mcgurk/Arduino-USB-HID-RetroJoystickAdapter synced 2024-11-21 08:35:05 -05:00
Code Issues Releases Wiki Activity

Update README.md

Browse Source
This commit is contained in:
Jarno Lehtinen 2018-12-19 14:12:16 +02:00 committed by GitHub
parent dffa0b07bf
commit 6145521f8c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
C64_4joy_adapter/README.md
View File

@ -3,16 +3,22 @@
```
```
cli // 1 clock
PORTB = *ptr; // is this atomic? probably, because ptr is 6-bit pointer.
f98: e0 91 26 01 lds r30, 0x0126 ; 0x800126 <__data_end> // 2 clocks
f9c: f0 91 27 01 lds r31, 0x0127 ; 0x800127 <__data_end+0x1> // 2 clocks
fa0: 80 81 ld r24, Z // 1 clock
fa2: 85 b9 out 0x05, r24 ; 5 // 1 clock
sei // 1 clock
```
500ns
```
cli
mov r31, r1
mov r30, gpior2
ld r24, Z
out 0x05, r24
sei
```
375ns