Fabgl and PC emulator - parameters for uploading firmware

[Stan6314]

Hi,
I discovered a very interesting Fabgl project. I wanted to remember the old days when the IBM PC XT was an elusive dream for me.
So I took the ESP32 Wrover-E module and connected the appropriate connectors to it. I tried to follow the instructions in the video. But I ran into a problem.

1. If I select "ESP32 Wrover module" in the Arduino IDE, the message "Please disable PSRAM to improve performance!" will appear on the screen VGA after startup. But Arduino (1.8.13) doesn't offer this option for Wrover at all.
2. If I select "ESP32 dev module" in the Arduino IDE everything goes well (VGA works, the module connects to Wifi, the appropriate files are downloaded to the SD card) only until the PC starts. At the moment when the emulator is to start, only a black screen will appear with a blinking cursor at the top left. Nothing reacts anymore from that moment.

Please, is there any way to properly load a program into the Wrover-E module? Or at least some advice on where the mistake might be?

Thanks Stan

[Stan6314]

I researched the problem further and it seems that the error is in the library Fabgl 1.05. I proceeded as follows:
First I took another piece of ESP32 - this time it was an older Wrover-B model.
The error was the same for this piece.
I went back to the older version of the library 1.04 - and it can be loaded and also works!
The image was slightly stretched on the monitor, but "IBM PC" is already working.
I finally played black and white Solitaire!!! Thanks so much Fabrizio! :-)

I couldn't sleep so I started looking for the cause. Version 1.05 seems to contain a bug.
The SD card is connected as follows in my case:
... mountSDCard(false, SD_MOUNT_PATH, 8, 16*1024, 35, 12, 14, 13)

If the error message starts to be monitored via the serial TX output, everything runs normally until the "IBM PC" is started.
The moment the computer starts to take data from the SD, an error occurs when communication starts:

E (32236) spi: SPI2 already claimed by spi master.
E (32236) spi_master: spi_bus_initialize(242): host already in use
Too much ticks! (83041)
E (32312) sdmmc_cmd: sdmmc_read_sectors_dma: sdmmc_send_cmd returned 0x107
E (32313) diskio_sdmmc: sdmmc_read_blocks failed (263)
8087 MATH Coprocessor DF 16 00 F0 - not implemented!
8087 MATH Coprocessor DF 16 00 F0 - not implemented!
...
Runtime errors 8086 follow

The error affects the same for both Wrover-E and Wrover-B. Maybe the problem will be eliminated in the next version.
Thanks again to Fabrizio ...