From b856763f7ee0cee75145be02c514a584690d5e9c Mon Sep 17 00:00:00 2001 From: Amber <63863236+amberisvibin@users.noreply.github.com> Date: Mon, 8 Jun 2020 16:06:11 -0400 Subject: [PATCH] more detail on graphics --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index 3686de7..0702fcf 100644 --- a/README.md +++ b/README.md @@ -10,7 +10,7 @@ The bedroom Z80 will be a Z80-based microcomputer with an advanced I/O system, b - It will use a full 64k I/O space, using the upper 8 bits as a Device ID and the lower eight bits as a device address. This creates 256 I/O devices with 256 addresses each. This way, the device ID can be left in the upper address register, while the device address register is updated. -- The graphics system will be more advanced than most homebrew computer projects. It will have a custom TTL logic graphics card that will be able to display 320x200 in 256 colours over VGA. If possible, there will be a high res mode, at 640x400 in 4 shades of grey. There will be 64k of double-buffered VRAM, interfaced through a DMA chip on the card. +- The graphics system will be more advanced than most homebrew computer projects. It will have a custom TTL logic graphics card that will be able to display 320x200 in 256 colours over VGA. If possible, there will be a high res mode, at 640x400 in 4 shades of grey. There will be 64k of double-buffered VRAM, interfaced via commands. These commands will include aan auto-change funcion, allowing entire images to be copied with ease. It will also have a text mode, utilizing bitmap copy from the character ROM. ### Todo: