From 8affd35e0eedb75bb374e6f53531fb9629af1fd8 Mon Sep 17 00:00:00 2001 From: Jeff Parsons Date: Fri, 14 Apr 2017 13:46:11 -0700 Subject: [PATCH] Some Markdown formatting fixes --- devices/pc8080/rom/vt100/README.md | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/devices/pc8080/rom/vt100/README.md b/devices/pc8080/rom/vt100/README.md index 837b8d036..5100aacaa 100644 --- a/devices/pc8080/rom/vt100/README.md +++ b/devices/pc8080/rom/vt100/README.md @@ -60,9 +60,9 @@ and if we display the data as bits instead of bytes: 1 1 1 1 1 1 1 . // 0xFE 1 . . . . . 1 . // 0x82 1 . . . . . 1 . // 0x82 - . . . . . . . . // 0x00 - . . . . . . . . // 0x00 - . . . . . . . . // 0x00 + . . . . . . . . // 0x00 + . . . . . . . . // 0x00 + . . . . . . . . // 0x00 it should be clear how the shape of the character is defined. However, the character generator ROM doesn't tell the whole story, because the VT100's display circuitry has a few additional tricks up its sleeve. @@ -76,7 +76,7 @@ As page 4-52 of DEC's [VT100 Technical Manual (July 1982)](http://bitsavers.info explains: > Data, coming either from the screen RAM for scan 1 or the line buffer for scans 2 through 10, becomes part of an -address to a character generator ROM. (See Figure 4-6-4, Character Generator Example.) The rest of the address comes +address to a character generator ROM. (See Figure 4-6-4, Character Generator Example.) The rest of the address comes from a scan counter in the DC012 control chip. The scan counter addresses the ROM according to which of the ten scans is to be displayed. The 4-bit scan counter skips over the other 6 possible addresses to the ROM, so the ROM contains data in only 10 out of 16 locations. The output of the ROM is eight bits that represent the pattern of sequential @@ -89,7 +89,7 @@ at page 4-76 of DEC's [VT100 Technical Manual (July 1982)](http://bitsavers.info you'll see the effect of the VT100's Dot Stretcher. Here's how DEC illustrates it: 20 dots for 2 characters ("Ap") in 80-col mode - + 0 . . . . . . . . . . . . . . . . . . . . 1 . . . . 1 . . . . . . . . . . . . . . . 2 . . . 1 . 1 . . . . . . . . . . . . . . @@ -98,9 +98,9 @@ you'll see the effect of the VT100's Dot Stretcher. Here's how DEC illustrates 5 . 1 1 1 1 1 1 1 . . . 1 1 . . . . 1 . . 6 . 1 . . . . . 1 . . . 1 . 1 1 1 1 . . . 7 . 1 . . . . . 1 . . . 1 . . . . . . . . - 8 . . . . . . . . . . . 1 . . . . . . . . - 9 . . . . . . . . . . . 1 . . . . . . . . - + 8 . . . . . . . . . . . 1 . . . . . . . . + 9 . . . . . . . . . . . 1 . . . . . . . . + Actual characters displayed after dot stretching 0 . . . . . . . . . . . . . . . . . . . .