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tudnai
2020-05-24 21:04:34 -07:00
parent ef4e124043
commit c5f16cd15a
2 changed files with 13 additions and 4 deletions
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15
A2Mac/ViewController.swift
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@@ -170,7 +170,8 @@ class ViewController: NSViewController {
} }
static let textBaseAddr = 0x400 static let textPage1Addr = 0x400
static let textPage2Addr = 0x800
static let textBufferSize = 0x400 static let textBufferSize = 0x400
// static only needed to be able to initialize things // static only needed to be able to initialize things
@@ -191,8 +192,10 @@ class ViewController: NSViewController {
// static var flashingSpace : Character = " " // static var flashingSpace : Character = " "
let ramBufferPointer = UnsafeRawBufferPointer(start: MEM, count: 64 * 1024) let ramBufferPointer = UnsafeRawBufferPointer(start: MEM, count: 64 * 1024)
let textBufferPointer = UnsafeRawBufferPointer(start: MEM + textBaseAddr, count: textBufferSize * 2) static let textPage1Pointer = UnsafeRawBufferPointer(start: MEM + textPage1Addr, count: textBufferSize * 2)
let textAuxBufferPointer = UnsafeRawBufferPointer(start: AUX + textBaseAddr, count: textBufferSize) static let textPage2Pointer = UnsafeRawBufferPointer(start: MEM + textPage2Addr, count: textBufferSize * 2)
var textBufferPointer = textPage1Pointer
let textAuxBufferPointer = UnsafeRawBufferPointer(start: AUX + textPage1Addr, count: textBufferSize)
static let textArraySize = textLines * (textCols + lineEndChars) + textCols * 2 static let textArraySize = textLines * (textCols + lineEndChars) + textCols * 2
@@ -518,6 +521,12 @@ class ViewController: NSViewController {
// 40 col // 40 col
if videoMode.col80 == 0 { if videoMode.col80 == 0 {
if MEMcfg.txt_page_2 == 0 {
self.textBufferPointer = ViewController.textPage1Pointer
}
else {
self.textBufferPointer = ViewController.textPage2Pointer
}
// render the rest of the text screen // render the rest of the text screen
for y in fromLines ..< toLines { for y in fromLines ..< toLines {
for x in 0 ..< self.textCols { for x in 0 ..< self.textCols {

2
src/dev/mem/mmio.h
View File

@@ -786,7 +786,7 @@ INLINE void ioWrite( uint16_t addr, uint8_t val ) {
case io_VID_TXTPAGE2: case io_VID_TXTPAGE2:
// printf("io_VID_TXTPAGE2\n"); // printf("io_VID_TXTPAGE2\n");
MEMcfg.txt_page_2 = 1; MEMcfg.txt_page_2 = ! MEMcfg.is_80STORE;
textPageSelect(); textPageSelect();
break; break;