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Reject -1 rows and columns

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This commit is contained in:
Peter Evans 2018-03-12 00:33:22 -05:00
parent 543e3d0b73
commit 5dcc25f5eb
1 changed files with 4 additions and 0 deletions
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4
src/apple2.lores.c
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@ -54,6 +54,10 @@ apple2_lores_draw(apple2 *mach, size_t addr)
int row = apple2_text_row(addr), int row = apple2_text_row(addr),
col = apple2_text_col(addr); col = apple2_text_col(addr);
if (row == -1 || col == -1) {
return;
}
// In low-resolution mode, the row number is analagous to the text // In low-resolution mode, the row number is analagous to the text
// row number, like so: // row number, like so:
row *= 2; row *= 2;