HIGH RESOLUTION PROGRAMS



HIGH-RESOLUTION DEMOS

Optional hi-res demos can be executed on a "modified for hi-res" motherboard after
pressing the system reset button, then pressing the appropriate key as indicated
below.

F  (6)         Screen RAM Test (or demo)

               Hi-res screen RAM will be tested nonstop similar to the low-res
               Balcheck's RAM test. If a RAM error is found, an error report
               sequence is output to the dual display. The error sequence 
               displayed is as follows:


               ][ 01 XX 02 XX 03 XX 04 XX (1.9 sec blank)

               Where 01 02 03 and 04 are the bank numbers and

               XX is the error data byte displayed as a hexadecimal for each of
               the banks.


               During testing, the dual display initializes to 00 and counts up
               indicating the number of test passes executed (up to 99 decimal
               passes maximum).

               Each test pass takes about 20 seconds to complete.

               This test can also be used as a "crash test" demo to determine
               if hi-res screen RAM can run perfectly for a long period of time.


HD1 (3)        Original Hi-Res Test Demo

               Written in the 1980's to test MCM Design's hi-res Astrocade.
               Displays moving critter, wagon and fish in tank along with
               multiple magic static graphics and more. A screen shot and demo
               description are archived at BallyAlley.com in the Documentation/
               High Resolution Astrocade Upgrade section.


HD2 (2)        10 color nonstop textured test patterns with color variations. 


HD3 (CE)       The Pixel Stringer

               New demo in Sept 2018

               This over 600 byte demo is MCM Design's encore hi-res presentation
               for the BalcheckHR 8KB package. It show cases the tiny hi-res
               pixels with multiple variations in graphic patterns, colors and
               write speeds. Each show lasts 16 seconds. The magic XOR write
               function is utilized. The one pixel wide string can begin anywhere
               along the screen's x or y axis and grow in a random direction. The
               string will just keep growing and change color every time it
               bounces off the screen's edge. The demo is very graphics
               entertaining with non repetitive shows and may entice the viewer to
               continue watching to catch that rare glimpse of a show that is a
               "hi-res jaw dropper". This demo is a hi-res custom chip set
               exclusive.


HD4 (0)        Run low-res menu/on-board games on a hi-res screen RAM map.

               The graphics are split and displayed on the top 1/4 of the hi-res
               screen. A screen shot of this demo is archived on the
               BallyAlley.com website in the Documentation/High Resolution
               Astrocade Upgrade section.
 
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

SetScreenHR

Similar To SetScreen3, but runs in hi-res.
No tight run loop is utilized.

To execute SetScreenHR, hold down SX (plus +) key, then press the system reset
button.

To execute optional SetScreenHR routines similar to SetScreen3, hold down both
the specific key in column 3 (or column 1) and hold down SX (plus +) key with your 
left fingers, then press the system reset button with your right finger.

Column 1 write/read RAM locations are:

4000            4028            404F


7F70            7F98            7FBF





End of document
MCM Design
Dec 2018
