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some poor timing improvement attempts

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This commit is contained in:
notaz 2017-10-01 01:29:08 +03:00
parent 75b84e4b7c
commit d1b8bcc634
2 changed files with 8 additions and 2 deletions
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8
pico/memory.c
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@ -1195,6 +1195,8 @@ void PicoWrite16_32x(u32 a, u32 d) {}
static unsigned char z80_md_vdp_read(unsigned short a)
{
z80_subCLeft(2);
if ((a & 0x00f0) == 0x0000) {
switch (a & 0x0d)
{
@ -1218,8 +1220,10 @@ static unsigned char z80_md_bank_read(unsigned short a)
unsigned int addr68k;
unsigned char ret;
addr68k = Pico.m.z80_bank68k<<15;
addr68k += a & 0x7fff;
z80_subCLeft(3);
addr68k = Pico.m.z80_bank68k << 15;
addr68k |= a & 0x7fff;
ret = m68k_read8(addr68k);