From df49656b25bb62855c64d56c7a246e376c46762a Mon Sep 17 00:00:00 2001
From: UnknownShadow200 <unknownshadow200@gmail.com>
Date: Thu, 16 Jan 2025 20:01:11 +1100
Subject: [PATCH] PS1: Implement more accurate thread sleeping

---
 misc/ps1/ps1defs.h | 2 +-
 src/Platform_PS1.c | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/misc/ps1/ps1defs.h b/misc/ps1/ps1defs.h
index e4c10a006..5185f0db7 100644
--- a/misc/ps1/ps1defs.h
+++ b/misc/ps1/ps1defs.h
@@ -24,7 +24,7 @@ enum gp1_cmd_type {
 	GP1_CMD_DMA_MODE = 0x04000000,
 };
 
-enum gp1_dma_mode {
+enum gp1_cmd_dma_mode {
 	GP1_DMA_NONE       = 0,
 	GP1_DMA_CPU_TO_GP0 = 2,
 };
diff --git a/src/Platform_PS1.c b/src/Platform_PS1.c
index d6cbf9d79..eaeeee543 100644
--- a/src/Platform_PS1.c
+++ b/src/Platform_PS1.c
@@ -160,8 +160,12 @@ cc_result File_Length(cc_file file, cc_uint32* len) {
 *--------------------------------------------------------Threading--------------------------------------------------------*
 *#########################################################################################################################*/
 void Thread_Sleep(cc_uint32 milliseconds) {
-	// TODO sleep a bit
-	VSync(0);
+	// Simulate sleep with a busy loop
+	cc_uint64 delay  = (cc_uint64)milliseconds * F_CPU / (8 * 1000);
+	cc_uint32 delay_ = (cc_uint32)delay;
+
+	for (cc_uint32 i = 0; i < delay_; i++) { __asm__ volatile(""); }
+	ChangeClearPAD(0);
 }
 
 void Thread_Run(void** handle, Thread_StartFunc func, int stackSize, const char* name) {