ShuriZma
/
visualboyadvance-m
mirror of https://github.com/visualboyadvance-m/visualboyadvance-m.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #63 from retro-wertz/fix_gba_siocnt 

libretro: add SIO Control, normal mode reg
This commit is contained in:
Twinaphex 2019-07-23 13:47:12 +02:00 committed by GitHub
parent 7df7b19047 53ce6fb054
commit d1fcffc8c4
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 23 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/libretro/libretro.cpp
View File

@ -90,6 +90,8 @@ bool EmuReseted;
int winGbPrinterEnabled;
bool gba_joybus_active = false;
#define UPDATE_REG(address, value) WRITE16LE(((uint16_t*)&ioMem[address]), value)
LinkMode GetLinkMode()
{
return LINK_DISCONNECTED;
@ -97,7 +99,10 @@ LinkMode GetLinkMode()
void StartGPLink(uint16_t value)
{
WRITE16LE(((uint16_t*)&ioMem[COMM_RCNT]), value);
if (!ioMem)
return;
UPDATE_REG(COMM_RCNT, value);
}
void LinkUpdate(int ticks)
@ -106,6 +111,23 @@ void LinkUpdate(int ticks)
void StartLink(uint16_t siocnt)
{
/* log("'s' siocnt = %04x\n", siocnt); */
if (!ioMem)
return;
if(siocnt & 0x80)
{
siocnt &= 0xff7f;
if(siocnt & 1 && (siocnt & 0x4000))
{
UPDATE_REG(COMM_SIOCNT, 0xFF);
IF |= 0x80;
UPDATE_REG(0x202, IF);
siocnt &= 0x7f7f;
}
}
UPDATE_REG(COMM_SIOCNT, siocnt);
}
void CheckLinkConnection()