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-rw-r--r--blastem.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/blastem.c b/blastem.c
index 8ea6b01..49b180c 100644
--- a/blastem.c
+++ b/blastem.c
@@ -208,6 +208,14 @@ m68k_context * sync_components(m68k_context * context, uint32_t address)
vdp_adjust_cycles(v_context, mclks_per_frame);
io_adjust_cycles(&gamepad_1, context->current_cycle, mclks_per_frame/MCLKS_PER_68K);
io_adjust_cycles(&gamepad_2, context->current_cycle, mclks_per_frame/MCLKS_PER_68K);
+ if (busack_cycle != CYCLE_NEVER) {
+ if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) {
+ busack_cycle -= mclks_per_frame/MCLKS_PER_68K;
+ } else {
+ busack_cycle = CYCLE_NEVER;
+ busack = new_busack;
+ }
+ }
context->current_cycle -= mclks_per_frame/MCLKS_PER_68K;
if (z_context->current_cycle >= mclks_per_frame/MCLKS_PER_Z80) {
z_context->current_cycle -= mclks_per_frame/MCLKS_PER_Z80;
@@ -257,6 +265,14 @@ m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_
vdp_adjust_cycles(v_context, mclks_per_frame);
io_adjust_cycles(&gamepad_1, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K);
io_adjust_cycles(&gamepad_2, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K);
+ if (busack_cycle != CYCLE_NEVER) {
+ if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) {
+ busack_cycle -= mclks_per_frame/MCLKS_PER_68K;
+ } else {
+ busack_cycle = CYCLE_NEVER;
+ busack = new_busack;
+ }
+ }
}
}
context->current_cycle = v_context->cycles / MCLKS_PER_68K;
@@ -274,6 +290,14 @@ m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_
vdp_adjust_cycles(v_context, mclks_per_frame);
io_adjust_cycles(&gamepad_1, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K);
io_adjust_cycles(&gamepad_2, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K);
+ if (busack_cycle != CYCLE_NEVER) {
+ if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) {
+ busack_cycle -= mclks_per_frame/MCLKS_PER_68K;
+ } else {
+ busack_cycle = CYCLE_NEVER;
+ busack = new_busack;
+ }
+ }
}
}
if (blocked < 0) {