NAME Show - Displays IFF pictures SYNOPSIS Show file [...] [HIRES|LORES] [VERBOSE] [BLANK] [STEP n] [MAX n] DESCRIPTION Show displays IFF pictures of various types, including the multi- palette types PCHG, Sliced HAM (SHAM) and Dynamic HAM. Show can also display Dynamic Hires pictures, but only in Lores (use the LORES switch for this). Dynamic pictures that Show cannot handle, will be displayed using the viewer specified in the DYNASHOW variable, see below. Show will use the graphics overscan settings if a picture is larger than the default screen size. If the picture is larger than the overscan screen size, you can view the whole picture by scrolling in any direction using the mouse. PCHG, Sliced or Dynamic pictures can also be scrolled, but the vertical scrolling will be quantized. The default scrolling step is 50 pixel lines, or 100 if interlace is used. The reason for this quantization is that for every vertical scrolling position, about 25 KBytes of memory will be needed for copper lists, and every time the position changes, it will take some time to install the new copper list. OPTIONS HIRES Forces the screen resolution to Highres/Interlace. Note that this is only meaningful if the original picture uses neither Highres nor Interlace. LORES Forces the screen resolution to Lores. Note that this is only meaningful if the original picture uses both Highres and Interlace. VERBOSE Show prints some information about the picture, such as screen size/depth and display modes. If multi-palette scrolling is enabled, the number of scrolling steps and the number of bytes used for copper lists are also printed. BLANK Blanks the mouse pointer. STEP n The scrolling step (measured in pixel lines) used for multi-palette pictures. The default value is 50. If the picture uses interlace, twice this value will be used. MAX n Specifies an upper limit for the amount of memory that Show may use for copper lists. Show can rapidly eat up a lot of memory if the picture is large, and/or if you specify a small STEP value. If necessary, Show will use a smaller scrolling step in order to stay within this limit. The default value is 204800 (200 KBytes). For Sliced and Dynamic pictures, each scrolling step will take about 25 KBytes of memory, and for PCHG pictures, this amount is generally about 12 KBytes. KEYS ESC Displays the next picture, or quits if there are no more pictures to view. Pressing the right mouse button will have the same effect. Shift ESC Quits Show. Space Locks/unlocks the current scrolling position. TAB Toggles colour cycling. Shift TAB Turns off colour cycling and restores the original colour map. ENVIRONMENT SHOWOPTS Set this to your desired default options. DYNASHOW Set this variable to your favourite Dynamic Hires viewer. AUTHOR Christer Sundin (d8sunch@dtek.chalmers.se)