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Add screen holes to Apple II text memory chart

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The page 1 screen holes are used by peripherals, so it's useful to
call out their locations.
This commit is contained in:
Andy McFadden 2020-08-24 14:00:08 -07:00
parent 24bc7326e6
commit 575b4f25a7
3 changed files with 46 additions and 25 deletions
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2
SourceGen/Tools/WpfGui/Apple2ScreenChart.xaml
View File

@ -33,7 +33,7 @@ limitations under the License.
<system:String x:Key="str_HiRes2_L">Hi-Res Graphics, page 2, by line</system:String>
<system:String x:Key="str_HiRes1_A">Hi-Res Graphics, page 1, by address</system:String>
<system:String x:Key="str_HiRes2_A">Hi-Res Graphics, page 2, by address</system:String>
<system:String x:Key="str_Text">Text Pages 1 &amp; 2</system:String>
<system:String x:Key="str_TextWithHoles">Text Pages 1 &amp; 2, with holes</system:String>
</Window.Resources>
<StackPanel Margin="8">

64
SourceGen/Tools/WpfGui/Apple2ScreenChart.xaml.cs
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@ -31,6 +31,7 @@ namespace SourceGen.Tools.WpfGui {
public partial class Apple2ScreenChart : Window {
private const int NUM_HI_RES_ROWS = 192;
private const int NUM_TEXT_ROWS = 24;
private const int NUM_TEXT_HOLES = 8;
private Formatter mFormatter;
private static int[] sHiResRowsByAddr = GenerateHiResRowsByAddr();
@ -42,7 +43,7 @@ namespace SourceGen.Tools.WpfGui {
HiRes2_L,
HiRes1_A,
HiRes2_A,
Text
TextWithHoles
};
public class ChartModeItem {
public string Name { get; private set; }
@ -68,7 +69,7 @@ namespace SourceGen.Tools.WpfGui {
new ChartModeItem((string)FindResource("str_HiRes2_L"), ChartMode.HiRes2_L),
new ChartModeItem((string)FindResource("str_HiRes1_A"), ChartMode.HiRes1_A),
new ChartModeItem((string)FindResource("str_HiRes2_A"), ChartMode.HiRes2_A),
new ChartModeItem((string)FindResource("str_Text"), ChartMode.Text),
new ChartModeItem((string)FindResource("str_TextWithHoles"), ChartMode.TextWithHoles),
};
}
@ -122,7 +123,7 @@ namespace SourceGen.Tools.WpfGui {
case ChartMode.HiRes2_A:
text = DrawHiRes(0x4000, false);
break;
case ChartMode.Text:
case ChartMode.TextWithHoles:
text = DrawText();
break;
default:
@ -161,8 +162,9 @@ namespace SourceGen.Tools.WpfGui {
sb.Append(hdr);
sb.Append(div);
sb.Append(hdr);
sb.Append(eol);
for (int i = 0; i < NUM_HI_RES_ROWS / 4; i++) {
sb.Append(eol);
DrawHiResEntry(baseAddr, byLine, i, sb);
sb.Append(div);
DrawHiResEntry(baseAddr, byLine, i + NUM_HI_RES_ROWS / 4, sb);
@ -170,7 +172,6 @@ namespace SourceGen.Tools.WpfGui {
DrawHiResEntry(baseAddr, byLine, i + (NUM_HI_RES_ROWS * 2) / 4, sb);
sb.Append(div);
DrawHiResEntry(baseAddr, byLine, i + (NUM_HI_RES_ROWS * 3) / 4, sb);
sb.Append(eol);
}
return sb.ToString();
}
@ -226,26 +227,40 @@ namespace SourceGen.Tools.WpfGui {
const string hdr2 = "Page1 Page2 Line";
StringBuilder sb = new StringBuilder(
(hdr1.Length * 2 + div.Length * 1 + eol.Length) * NUM_TEXT_ROWS);
(hdr1.Length * 2 + div.Length * 1 + eol.Length) * (NUM_TEXT_ROWS + NUM_TEXT_HOLES));
sb.Append(" By Line " + div + " By Address" + eol);
sb.Append(hdr1);
sb.Append(div);
sb.Append(hdr2);
sb.Append(eol);
for (int i = 0; i < NUM_TEXT_ROWS; i++) {
for (int i = 0; i < NUM_TEXT_ROWS + NUM_TEXT_HOLES; i++) {
const int base1 = 0x400;
const int base2 = 0x800;
sb.Append(eol);
int rowIndex = i < NUM_TEXT_ROWS ? i : NUM_TEXT_ROWS - i - 1;
int textRow = sTextRowsByAddr[i];
sb.AppendFormat(" {0,2:D} {1} {2}", i,
mFormatter.FormatHexValue(TextRowToAddr(base1, i), 4),
mFormatter.FormatHexValue(TextRowToAddr(base2, i), 4));
if (rowIndex >= 0) {
sb.AppendFormat(" {0,2:D} {1} {2}", rowIndex,
mFormatter.FormatHexValue(TextRowToAddr(base1, rowIndex), 4),
mFormatter.FormatHexValue(TextRowToAddr(base2, rowIndex), 4));
} else {
sb.AppendFormat(" H{0} {1} {2}", -rowIndex - 1,
mFormatter.FormatHexValue(TextRowToAddr(base1, rowIndex), 4),
mFormatter.FormatHexValue(TextRowToAddr(base2, rowIndex), 4));
}
sb.Append(div);
sb.AppendFormat("{1} {2} {0,2:D}", textRow,
mFormatter.FormatHexValue(TextRowToAddr(base1, textRow), 4),
mFormatter.FormatHexValue(TextRowToAddr(base2, textRow), 4));
sb.Append(eol);
if (textRow >= 0) {
sb.AppendFormat("{1} {2} {0,2:D}", textRow,
mFormatter.FormatHexValue(TextRowToAddr(base1, textRow), 4),
mFormatter.FormatHexValue(TextRowToAddr(base2, textRow), 4));
} else {
sb.AppendFormat("{1} {2} H{0}", -textRow - 1,
mFormatter.FormatHexValue(TextRowToAddr(base1, textRow), 4),
mFormatter.FormatHexValue(TextRowToAddr(base2, textRow), 4));
}
}
return sb.ToString();
}
@ -254,14 +269,19 @@ namespace SourceGen.Tools.WpfGui {
/// Generates the address of a line on the text screen.
/// </summary>
/// <param name="baseAddr">Base address (0x0400 or 0x0800).</param>
/// <param name="row">Row number (0-23).</param>
/// <param name="row">Row number (0-23), or screen hole (-1 - -8).</param>
/// <returns>Address of start of line.</returns>
private static int TextRowToAddr(int baseAddr, int row) {
// If row is 000ABCDE, we want 0000ppCD EABAB000 (where p is $04/$08).
int high = (row & 0x06) >> 1;
int low = (row & 0x18) | ((row & 0x18) << 2) | ((row & 0x01) << 7);
int rowAddr = baseAddr + ((high << 8) | low);
return rowAddr;
if (row < 0) {
// Screen hole: $478, $4f8, ...
return baseAddr + (-row) * 128 - 8;
} else {
// If row is 000ABCDE, we want 0000ppCD EABAB000 (where p is $04/$08).
int high = (row & 0x06) >> 1;
int low = (row & 0x18) | ((row & 0x18) << 2) | ((row & 0x01) << 7);
int rowAddr = baseAddr + ((high << 8) | low);
return rowAddr;
}
}
/// <summary>
@ -271,7 +291,7 @@ namespace SourceGen.Tools.WpfGui {
/// <returns>List of rows, in memory order.</returns>
private static int[] GenerateTextRowsByAddr() {
SortedList<int, int> addrList = new SortedList<int, int>(NUM_TEXT_ROWS);
for (int i = 0; i < NUM_TEXT_ROWS; i++) {
for (int i = -NUM_TEXT_HOLES - 1; i < NUM_TEXT_ROWS; i++) {
addrList.Add(TextRowToAddr(0, i), i);
}

5
SourceGen/Tools/WpfGui/AsciiChart.xaml.cs
View File

@ -105,8 +105,9 @@ namespace SourceGen.Tools.WpfGui {
sb.Append(hdr);
sb.Append(div);
sb.Append(hdr);
sb.Append(eol);
for (int i = 0; i < 32; i++) {
sb.Append(eol);
DrawEntry(item.Mode, i, sb);
sb.Append(div);
DrawEntry(item.Mode, i + 32, sb);
@ -114,8 +115,8 @@ namespace SourceGen.Tools.WpfGui {
DrawEntry(item.Mode, i + 64, sb);
sb.Append(div);
DrawEntry(item.Mode, i + 96, sb);
sb.Append(eol);
}
sb.Append(eol); // easier to read the '_' at the bottom
chartTextBox.Text = sb.ToString();
chartTextBox.SelectionStart = sb.Length;