void c64_256k_cia_set_vbank(int ciabank)
{
cia_vbank=ciabank;
video_bank_segment=((c64_256k_PRB&0xc0)>>4)+cia_vbank;
vicii_set_ram_base(c64_256k_ram+(video_bank_segment*0x4000));
mem_set_vbank(0);
}
void plus256k_reset(void)
{
plus256k_reg = 0;
plus256k_video_bank = 0;
plus256k_low_bank = 0;
plus256k_high_bank = 0;
plus256k_protected = 0;
if (plus256k_enabled) {
vicii_set_ram_base(plus256k_ram);
}
}
void REGPARM2 plus256k_vicii_store(WORD addr, BYTE value)
{
int new_bank;
if (plus256k_protected == 0) {
plus256k_reg = value;
plus256k_high_bank = (value & 0xc0) >> 6;
plus256k_low_bank = value & 3;
plus256k_protected = (value & 0x10) >> 4;
new_bank = (value & 0xc) >> 2;
if (new_bank != plus256k_video_bank) {
vicii_set_ram_base(plus256k_ram + (new_bank * 0x10000));
plus256k_video_bank = new_bank;
}
}
static int plus256k_deactivate(void)
{
if (!util_check_null_string(plus256k_filename)) {
if (util_file_save(plus256k_filename, plus256k_ram, 0x40000) < 0) {
log_message(plus256k_log, "Writing PLUS256K image %s failed.", plus256k_filename);
return -1;
}
log_message(plus256k_log, "Writing PLUS256K image %s.", plus256k_filename);
}
vicii_set_ram_base(mem_ram);
lib_free(plus256k_ram);
plus256k_ram = NULL;
remove_cpu_lines_lock();
return 0;
}
void c64_256k_reset(void)
{
c64_256k_DDA=0;
c64_256k_DDB=0;
c64_256k_PRA=0xdc;
c64_256k_PRB=0xfe;
c64_256k_CRA=4;
c64_256k_CRB=4;
cia_vbank=0;
video_bank_segment=0xc;
c64_256k_segment0=0xc;
c64_256k_segment1=0xd;
c64_256k_segment2=0xe;
c64_256k_segment3=0xf;
if (c64_256k_enabled)
{
vicii_set_ram_base(c64_256k_ram+0x30000);
mem_set_vbank(0);
}
}
