Mercurial > repos > blastem
changeset 616:649db9397fa1
Add support for Z80 access to VDP via bank area
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Mon, 29 Dec 2014 00:41:36 -0800 |
parents | edd2c446694b |
children | 33ff0171301b |
files | blastem.c |
diffstat | 1 files changed, 7 insertions(+), 1 deletions(-) [+] |
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--- a/blastem.c Mon Dec 29 00:14:33 2014 -0800 +++ b/blastem.c Mon Dec 29 00:41:36 2014 -0800 @@ -732,7 +732,11 @@ { z80_context * context = vcontext; uint32_t address = context->bank_reg << 15 | location; - fprintf(stderr, "Unhandled read by Z80 from address %X through banked memory area\n", address); + if (address >= 0xC00000 && address < 0xE00000) { + return z80_vdp_port_read(location & 0xFF, context); + } else { + fprintf(stderr, "Unhandled read by Z80 from address %X through banked memory area\n", address); + } return 0; } @@ -743,6 +747,8 @@ if (address >= 0xE00000) { address &= 0xFFFF; ((uint8_t *)ram)[address ^ 1] = value; + } else if (address >= 0xC00000) { + z80_vdp_port_write(location & 0xFF, context, value); } else { fprintf(stderr, "Unhandled write by Z80 to address %X through banked memory area\n", address); }