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appleramdac: vendor ID for AT&T fabbed RAMDACs.

This commit is contained in:
Maxim Poliakovski 2024-04-11 16:56:10 +02:00
parent 1c5009fcb0
commit c22843f238
2 changed files with 2 additions and 2 deletions
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2
devices/video/appleramdac.cpp
View File

@ -160,7 +160,7 @@ int AppleRamdac::get_dot_freq() {
uint8_t n = this->clk_pn[this->pll_cr & 1] & 0x1F;
double dot_freq;
if (this->dac_vendor == DACULA_VENDOR_OTHER)
if (this->dac_vendor == DACULA_VENDOR_ATT)
dot_freq = 15000000.0f * (double)m / ((double)n + 2) / (double)(1 << p);
else if (this->dac_vendor == DACULA_VENDOR_SIERRA)
dot_freq = 14318180.0f * (double)m / ((double)n * (double)(1 << p));

2
devices/video/appleramdac.h
View File

@ -36,7 +36,7 @@ enum DacFlavour {
};
#define DACULA_VENDOR_SIERRA 0x3C // 14.3 MHz
#define DACULA_VENDOR_OTHER 0x84 // 15 MHz
#define DACULA_VENDOR_ATT 0x84 // 15 MHz
constexpr auto VIDEO_XTAL = 14318180.0f; // external crystal oscillator frequency