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author arbee <rb6502@users.noreply.github.com>2020-07-01 21:26:37 -0400
committer arbee <rb6502@users.noreply.github.com>2020-07-01 21:26:37 -0400
commitbeb1e811b4743297ba41ac8b78d152c92e0223ee (patch)
treeb3218ace5accd864d1700c3d242b28e025eefa27
parent0d04b8b0cf0c3c9e6aa27e40d16bffbad95f20ba (diff)
apple3: upload the font at the end of VBL, not the start [robj]
-rw-r--r--src/mame/machine/apple3.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/machine/apple3.cpp b/src/mame/machine/apple3.cpp
index 695e5f1ccfe..1a4bf520389 100644
--- a/src/mame/machine/apple3.cpp
+++ b/src/mame/machine/apple3.cpp
@@ -480,7 +480,8 @@ void apple3_state::apple3_c0xx_w(offs_t offset, uint8_t data)
WRITE_LINE_MEMBER(apple3_state::vbl_w)
{
- if ((state) && (m_charwrt))
+ // do the font upload at the end of VBL, not the start
+ if ((!state) && (m_charwrt))
{
apple3_write_charmem();
}