Routines |
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This subroutine is common to both saving and loading.
The border is set to its original colour and the BREAK key tested for a last time.
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SA_LD_RET | 053F | PUSH AF | Save the carry flag. (It is reset after a loading error.) | |||||
0540 | LD A,($5C48) | Fetch the original border colour from its system variable (BORDCR). | ||||||
0543 | AND $38 | |||||||
0545 | RRCA | Move the border colour to bits 2, 1 and 0. | ||||||
0546 | RRCA | |||||||
0547 | RRCA | |||||||
0548 | OUT ($FE),A | Set the border to its original colour. | ||||||
054A | LD A,$7F | Read the BREAK key for a last time. | ||||||
054C | IN A,($FE) | |||||||
054E | RRA | |||||||
054F | EI | Enable the maskable interrupt. | ||||||
0550 | JR C,SA_LD_END | Jump unless a break is to be made. | ||||||
Report D - BREAK-CONT repeats.
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0552 | RST $08 | Call the error handling routine. | ||||||
0553 | DEFB $0C | |||||||
Continue here.
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SA_LD_END | 0554 | POP AF | Retrieve the carry flag. | |||||
0555 | RET | Return to the calling routine. |
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