From b7df1ed5d485fbf39b4dd2078631d369ee292224 Mon Sep 17 00:00:00 2001 From: "ol.sc" Date: Sun, 13 Sep 2009 19:50:09 +0000 Subject: [PATCH] Being loaded by my 'ProDOS Loader' needs to be classified as being loaded as BIN from an interpreter (and not as SYS). But the 'ProDOS Loader' zeros the system bitmap up to the system global page (this is what it's about) so additionally check page $03 protection which is zero when loaded as SYS but one when loaded by 'ProDOS Loader 1.4'. git-svn-id: svn://svn.cc65.org/cc65/trunk@4168 b7a2c559-68d2-44c3-8de9-860c34a00d81 --- libsrc/apple2/crt0.s | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/libsrc/apple2/crt0.s b/libsrc/apple2/crt0.s index 9ba7f9534..b0ffabf1c 100644 --- a/libsrc/apple2/crt0.s +++ b/libsrc/apple2/crt0.s @@ -165,8 +165,12 @@ init: ldx #zpspace-1 bne basic ; Check ProDOS system bit map + lda $BF58 ; protection for pages $00 - $07 + and #%11110000 ; ignore protection of text pages + cmp #%11000000 ; only zero and stack pages are protected + bne basic lda $BF6F ; protection for pages $B8 - $BF - cmp #%00000001 ; exactly page $BF is protected + cmp #%00000001 ; exactly system global page is protected bne basic ; No BASIC.SYSTEM so quit to ProDOS dispatcher instead -- 2.39.5