EOS is the built-in operating system of the

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Overview

The functions are grouped into categories as follows.EOS Programmer's Manual
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Executive calls

* eos_init * eos_hard_init * eos_hard_reset_net * eos_delay_after_hard_reset * eos_synchronize_clocks * eos_scan_for_devices * eos_relocate_pcb * eos_soft_init * eos_exit_to_smartwriter * eos_switch_memory_banks

Console Output

* eos_console_init * eos_console_display_regular * eos_console_display_special

Printer Interface

* eos_print_character * eos_print_buffer * eos_printer_status * eos_start_print_character * eos_end_print_character

Keyboard Interface

* eos_keyboard_status * eos_read_keyboard * eos_start_read_keyboard * eos_end_read_keyboard

File Operations

* eos_file_manager_init * eos_check_directory_for_file * eos_find_file_1 * eos_find_file_2 * eos_find_file_in_fcb * eos_check_file_mode * eos_make_file * eos_update_file_in_directory * eos_open_file * eos_close_file * eos_read_file * eos_write_file * eos_trim_file * eos_initialize_directory * eos_reset_file * eos_get_date * eos_put_date * eos_delete_file * eos_rename_file

Device Operations

* eos_find_pcb * eos_find_dcb * eos_request_device_status * eos_get_device_status * eos_soft_reset_device * eos_soft_reset_keyboard * eos_soft_reset_printer * eos_read_block * eos_read_one_block * eos_start_read_one_block * eos_end_read_one_block * eos_write_block * eos_write_one_block * eos_start_write_one_block * eos_end_write_one_block * eos_start_read_character_device * eos_end_read_character_device * eos_read_character_device * eos_start_write_character_device * eos_end_write_character_device * eos_write_character_device

Video RAM Management

* eos_set_vdp_ports * eos_set_vram_table_address * eos_load_ascii_in_vdp * eos_put_ascii_in_vdp * eos_write_vram * eos_read_vram * eos_put_vram * eos_get_vram * eos_write_vdp_register * eos_read_vdp_register * eos_fill_vram * eos_calculate_pattern_position * eos_point_to_pattern_position * eos_write_sprite_table

Game Controllers

* eos_read_game_controller * eos_update_spinner

Sound Routines

* eos_sound_init * eos_sound_off * eos_start_sound * eos_play_sound * eos_end_sound

Subroutines

* eos_decrement_low_nibble * eos_decrement_high_nibble * eos_move_high_nibble_to_low_nibble * eos_add_a_to_hl

References

External links

Technical Reference Manual
chapter 3

Boot codeForum
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