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rainbow: added register $4105 to automatically read RX/TX FPGA RAM

This commit is contained in:
contact@brokestudio.fr 2022-01-21 09:51:25 +01:00
parent 488fbd15b5
commit b0ec8d5b6e
1 changed files with 15 additions and 4 deletions
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19
src/boards/rainbow13.cpp
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@ -63,7 +63,7 @@ static uint8 chr_chip, chr_mode, chr_upper_bank;
static uint8 mirr_mode, nt_set;
static uint8 mul_a, mul_b;
static uint16 mul_result;
static uint8 rx_address, tx_address;
static uint8 rx_address, tx_address, rx_index;
static uint8 *WRAM = NULL;
const uint32 WRAMSIZE = 32 * 1024;
@ -144,6 +144,7 @@ static void esp_check_new_message() {
{
FPGA_WRAM[(rx_address << 8) + 1 + i] = esp->tx();
}
rx_index = 0;
has_esp_message_received = true;
}
}
@ -394,16 +395,19 @@ static DECLFR(Rainbow13Read) {
uint8 esp_rts_flag = esp->getDataReadyIO() ? 0x40 : 0x00;
return esp_message_received_flag | esp_rts_flag;
}
case 0x4102:
case 0x4102: return esp_message_sent ? 0x80 : 0;
case 0x4105:
{
return esp_message_sent ? 0x80 : 0;
uint8 retval = FPGA_WRAM[(rx_address << 8) + rx_index];
rx_index++;
return retval;
}
case 0x4110: return (nt_set << 6) | (mirr_mode << 4) | (chr_chip << 3) | (chr_mode << 1) | prg_mode;
case 0x4113: return MAPPER_VERSION;
case 0x4160: return mul_result & 0xff;
case 0x4161: return (mul_result >> 8) & 0xff;
default:
return 0;
return CartBR(A);
}
}
@ -438,6 +442,9 @@ static DECLFW(Rainbow13Write) {
case 0x4104:
tx_address = V & 0x03;
break;
case 0x4105:
rx_index = V;
break;
case 0x4120: prg[0] = V; Sync(); break;
case 0x4121: prg[1] = V & 0x3f; Sync(); break;
case 0x4122: prg[2] = V & 0x3f; Sync(); break;
@ -818,6 +825,7 @@ static void Rainbow13Reset(void) {
esp_message_sent = true;
rx_address = 0;
tx_address = 0;
rx_index = 0;
IRQa = 0;
}
@ -889,6 +897,9 @@ static void Rainbow13Power(void) {
esp_irq_enable = false;
clear_esp_message_received();
esp_message_sent = true;
rx_address = 0;
tx_address = 0;
rx_index = 0;
}
static void Rainbow13Close(void)