mirror of
https://github.com/a2stuff/prodos-drivers.git
synced 2024-06-02 01:41:31 +00:00
b621ac6a4d
This is a modified version of the ROMX Real-Time Clock driver. The changes include: * Converting the source to ca65. * Integrating with the driver installer framework. * Adapting the driver to not modify page 2 beyond $220. The ROMX RTC firmware writes bytes to $2B0, and the the original driver placed temp code at $250. This can conflict with ProDOS applications that use page 2, so the driver was reworked to save/restore anything at at $2B0. Other changes: * Add a util/ source dir, and cricket/date, quit.system and pause.system there. * Pull the "print current date" logic out of clock drivers into driver preamble.
31 lines
800 B
ArmAsm
31 lines
800 B
ArmAsm
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.setcpu "6502"
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.linecont +
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.feature string_escapes
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.include "apple2.inc"
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.include "apple2.mac"
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.include "../inc/apple2.inc"
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.include "../inc/macros.inc"
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.include "../inc/prodos.inc"
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.include "../inc/ascii.inc"
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;;; ************************************************************
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.include "../inc/driver_preamble.inc"
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;;; ************************************************************
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.proc maybe_install_driver
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ldx #4
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: lda #$FF
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jsr $FCA8 ; WAIT
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dex
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bne :-
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rts
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.endproc
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;;; ************************************************************
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.include "../inc/driver_postamble.inc"
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;;; ************************************************************
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