No clear screen button on Olimex iCE40HX8K with ICE40-IO

[mobluse]

There is no button that works for clearing the screen on iCE40HX8K, but BUT2 could have this role. I think the warning on the last line in the code box below could have something to do with this.

pi@lenovo5:~/apple-one/boards/olimex_ice40hx8k_evb_ice40-io/yosys$ make
mkdir -p build
yosys -q  -p "chparam -list; hierarchy -top apple1_top; synth_ice40 -blif build/apple1.blif" ../../../rtl/apple1.v ../../../rtl/clock.v ../../../rtl/pwr_reset.v ../../../rtl/ram.v ../../../rtl/rom_wozmon.v ../../../rtl/rom_basic.v ../../../rtl/cpu/arlet_6502.v ../../../rtl/cpu/arlet/ALU.v ../../../rtl/cpu/arlet/cpu.v ../../../rtl/uart/uart.v ../../../rtl/uart/async_tx_rx.v ../../../rtl/vga/vga.v ../../../rtl/vga/vram.v ../../../rtl/vga/font_rom.v ../../../rtl/ps2keyboard/debounce.v ../../../rtl/ps2keyboard/ps2keyboard.v ../../../rtl/boards/olimex_ice40hx8k/pll.v ../../../rtl/boards/olimex_ice40hx8k/apple1_hx8k.v
Warning: Replacing memory \AXYS with list of registers. See ../../../rtl/cpu/arlet/cpu.v:541
Warning: Wire apple1_top.\my_apple1.my_vga.clr_screen is used but has no driver.

BUT1 starts WozMon without clearing the screen.
BUT2 does nothing.
RESET1 resets i.e. clears the screen and starts WozMon.

[mobluse]

It is fixed now, see video https://youtu.be/2yIBnhapzEU