diff options
Diffstat (limited to 'src/drivers/ao_vga.c')
| -rw-r--r-- | src/drivers/ao_vga.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/src/drivers/ao_vga.c b/src/drivers/ao_vga.c index eecf58f0..0e9c6706 100644 --- a/src/drivers/ao_vga.c +++ b/src/drivers/ao_vga.c @@ -89,7 +89,6 @@ int vblank_off = 25; void stm_tim2_isr(void) { - ao_arch_block_interrupts(); if (!vblank) { /* Disable */ stm_dma.channel[DMA_INDEX].ccr = DMA_CCR(0); @@ -101,18 +100,17 @@ void stm_tim2_isr(void) } stm_tim2.sr = ~(1 << STM_TIM234_SR_CC2IF); line = stm_tim3.cnt; - if (vblank_off <= line && line < (AO_VGA_HEIGHT << 1) + vblank_off) { + if (vblank_off <= line && line < ((AO_VGA_HEIGHT-1) << 1) + vblank_off) { vblank = 0; if (((line - vblank_off) & 1) == 0) scanline += AO_VGA_STRIDE; } else { if (!vblank) { - stm_systick_isr(); +// stm_systick_isr(); scanline = ao_vga_fb; vblank = 1; } } - ao_arch_release_interrupts(); } static void @@ -359,9 +357,9 @@ ao_vga_enable(int enable) vblank_off = enable; ao_vga_fb_init(); stm_tim2.cr1 |= (1 << STM_TIM234_CR1_CEN); - stm_systick.csr &= ~(1 << STM_SYSTICK_CSR_ENABLE); +// stm_systick.csr &= ~(1 << STM_SYSTICK_CSR_ENABLE); } else { stm_tim2.cr1 &= ~(1 << STM_TIM234_CR1_CEN); - stm_systick.csr |= (1 << STM_SYSTICK_CSR_ENABLE); +// stm_systick.csr |= (1 << STM_SYSTICK_CSR_ENABLE); } } |