816666615b
Add a machinetype identifier to help us quickly identify Apple //e (bit 7) and //e enhanced (bit 6). Use it in conio functions for 80-columns code instead of relying entirely on the __APPLE2ENH__ target. Move videomode() to the apple2 target, and have it return an error if 80-columns hardware is not available - this is a lie for now, it is considered available on //e enhanced, which may not be true, and not available on //e, which may also be not true. An ulterior patch will make that check correctly. Adapt the box/line drawing characters so that one can use MouseText on the apple2 target if it is available, by defining DYN_DRAW_BOX. No change by default: MouseText is considered available on apple2enh and not available on apple2.
25 lines
527 B
ArmAsm
25 lines
527 B
ArmAsm
.ifndef __APPLE2ENH__
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.constructor initmachinetype, 8
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.import ostype
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.export machinetype
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.segment "ONCE"
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initmachinetype:
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ldx ostype
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cpx #$31 ; Apple //e enhanced?
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ror machinetype ; Carry to high bit
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cpx #$30 ; Apple //e?
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ror machinetype
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rts
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.data
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; bit 7: Machine is a //e or newer
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; bit 6: Machine is a //e enhanced or newer
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machinetype: .byte 0
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.endif
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