From 8668ed398f50601c805f7e9fb629dec93e5a45f4 Mon Sep 17 00:00:00 2001 From: Michael Pavone Date: Mon, 16 Jun 2014 19:13:28 -0700 Subject: Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. --- vdp.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) (limited to 'vdp.c') diff --git a/vdp.c b/vdp.c index 5cf5797..1ae6480 100644 --- a/vdp.c +++ b/vdp.c @@ -227,8 +227,8 @@ void vdp_print_reg_explain(vdp_context * context) context->regs[REG_SCROLL_A], (context->regs[REG_SCROLL_A] & 0x38) << 10, context->regs[REG_WINDOW], (context->regs[REG_WINDOW] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x3C : 0x3E)) << 10, context->regs[REG_SCROLL_B], (context->regs[REG_SCROLL_B] & 0x7) << 13, - context->regs[REG_SAT], (context->regs[REG_SAT] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x3E : 0x3F)) << 9, - context->regs[REG_HSCROLL], (context->regs[REG_HSCROLL] & 0x1F) << 10); + context->regs[REG_SAT], (context->regs[REG_SAT] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x7E : 0x7F)) << 9, + context->regs[REG_HSCROLL], (context->regs[REG_HSCROLL] & 0x3F) << 10); char * sizes[] = {"32", "64", "invalid", "128"}; printf("\n**Misc Group**\n" "07: %.2X | Backdrop Color: $%X\n" @@ -239,6 +239,20 @@ void vdp_print_reg_explain(vdp_context * context) context->regs[REG_HINT], context->regs[REG_HINT], context->regs[REG_AUTOINC], context->regs[REG_AUTOINC], context->regs[REG_SCROLL], sizes[context->regs[REG_SCROLL] & 0x3], sizes[context->regs[REG_SCROLL] >> 4 & 0x3]); + char * src_types[] = {"68K", "68K", "Copy", "Fill"}; + printf("\n**DMA Group**\n" + "13: %.2X |\n" + "14: %.2X | DMA Length: $%.4X words\n" + "15: %.2X |\n" + "16: %.2X |\n" + "17: %.2X | DMA Source Address: $%.6X, Type: %s\n", + context->regs[REG_DMALEN_L], + context->regs[REG_DMALEN_H], context->regs[REG_DMALEN_H] << 8 | context->regs[REG_DMALEN_L], + context->regs[REG_DMASRC_L], + context->regs[REG_DMASRC_M], + context->regs[REG_DMASRC_H], + context->regs[REG_DMASRC_H] << 17 | context->regs[REG_DMASRC_M] << 9 | context->regs[REG_DMASRC_L], + src_types[context->regs[REG_DMASRC_H] >> 6 & 3]); printf("\n**Internal Group**\n" "Address: %X\n" "CD: %X\n" @@ -1422,7 +1436,9 @@ void vdp_run_context(vdp_context * context, uint32_t target_cycles) } uint32_t linecyc = context->cycles % MCLKS_LINE; if (linecyc == 0) { - if (line <= 1 || line >= active_lines) { + context->latched_mode &= ~0x81; + context->latched_mode |= context->regs[REG_MODE_4] & 0x81; + if (line < 1 || line >= active_lines) { context->hint_counter = context->regs[REG_HINT]; } else if (context->hint_counter) { context->hint_counter--; @@ -1925,9 +1941,6 @@ uint32_t vdp_next_hint(vdp_context * context) } uint32_t linecyc = context->cycles % MCLKS_LINE; uint32_t hcycle = context->cycles + context->hint_counter * MCLKS_LINE + MCLKS_LINE - linecyc; - if (!line) { - hcycle += MCLKS_LINE; - } return hcycle; } -- cgit v1.2.3