💾 Archived View for spam.works › mirrors › textfiles › computers › ASTRESEARCH › 0031.tb captured on 2023-11-14 at 13:31:55.
⬅️ Previous capture (2023-06-16)
-=-=-=-=-=-=-
AST RESEARCH TECHNICAL BULLETIN TB-0031 7-17-84
AST MONOGRAPHPLUS TECHNICAL REFERENCE MANUAL
In Table 4-1 that is located on page 4-2 of Technical Reference Manual
(part no. 000127-002A) there are some corrections necessary under the
column "Graphics Mode". A "change page" has recently been distributed
to make corrections, but it also contains one error in the table.
Listed below is the corrected table.
Table 4-1 CRTC Internal Registers
Register Text Mode Graphics Mode
Number Parameter (decimal/hex) (decimal hex) Units
:00 Horizontal total 97/:61 56/:38 Characters
:01 Horizontal display 80/:50 42/:2D Characters
:02 HSync position 82/:52 48/:30 Characters
:03 HSync width 15/:0F 08/:08 Characters
:04 Vertical total 25/:19 90/:5A Rows
:05 Vertical adjust 06/:06 00/:00 Lines
:06 Vertical displayed 25/:19 87/:57 Rows
:07 VSync position 25/:19 87/:57 Rows
:08 Interlace mode 02/:02 02/:02 -----
:09 Maximum scan
line 13/:0D 03/:03 Lines
address
:0A Cursor start line 11/:0B 00/:00 Lines
:0B Cursor end line 12/:0C 00/:00 Lines
:0C Screen start 00/:00 00/:00 -----
address (high)
:0D Screen start 00/:00 00/:00 -----
address (low)
:0E Cursor address 00/:00 00/:00 -----
(high)
:0F Cursor address 00/:00 32/:20 -----
(low)
:10 Reserved ------ ------ -----
:11 Reserved ------ ------ -----