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Moving to a unified 64K expansion memory instead of small fragments

This commit is contained in:
tudnai 2020-04-27 08:15:36 -07:00
parent 4ecbc13628
commit 8e61a3403b
3 changed files with 12 additions and 11 deletions
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4
A2Mac/ViewController.swift
View File

@ -158,8 +158,8 @@ class ViewController: NSViewController {
// static var flashingSpace : Character = " "
let ramBufferPointer = UnsafeRawBufferPointer(start: RAM, count: 64 * 1024)
let textBufferPointer = UnsafeRawBufferPointer(start: RAM + textBaseAddr, count: textBufferSize)
let textAuxBufferPointer = UnsafeRawBufferPointer(start: AUX_VID_RAM, count: textBufferSize * 2)
let textBufferPointer = UnsafeRawBufferPointer(start: RAM + textBaseAddr, count: textBufferSize * 2)
let textAuxBufferPointer = UnsafeRawBufferPointer(start: AUX + textBaseAddr, count: textBufferSize)
static let textArraySize = textLines * (textCols + lineEndChars) + textCols * 2

5
src/cpu/6502.h
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@ -110,8 +110,9 @@ extern videoMode_t videoMode;
extern m6502_t m6502;
extern uint8_t * RAM;
extern uint8_t * AUX_VID_RAM;
extern uint8_t * const AUX; // Pointer to the auxiliary memory so we can use this from Swift
extern uint8_t * const RAM;
//extern uint8_t * AUX_VID_RAM;
extern uint32_t * videoMemPtr;
extern void hires_Update(void);

14
src/dev/mem/mmio.h
View File

@ -29,15 +29,15 @@ videoMode_t videoMode = { 1 }; // 40 col text, page 1
uint8_t Apple2_Dummy_Page[ 1 * PG ]; // Dummy Page for discarding data
uint8_t Apple2_Dummy_RAM[ 4 * KB ]; // Dummy RAM for discarding data
uint8_t Apple2_512_AUX[ 2 * PG ] = {0}; // Auxiliary bank for page 0 and 1
uint8_t Apple2_VID_AUX[ 2 * KB ] = {0}; // Auxiliary RAM for video page 2
uint8_t Apple2_12K_ROM[ 12 * KB ] = {0}; // ROM D0, D8, E0, E8, F0, F8
uint8_t Apple2_16K_ROM[ 16 * KB ] = {0}; // ROM C0, C8, D0, D8, E0, E8, F0, F8
uint8_t Apple2_16K_RAM[ 16 * KB ] = {0}; // 16K Memory Expansion Card
uint8_t Apple2_64K_AUX[ 64 * KB ] = {0}; // 64K Expansion Memory
uint8_t Apple2_64K_RAM[ 64 * KB ] = {0}; // Main Memory
uint8_t * AUX_VID_RAM = Apple2_VID_AUX; // Pointer to Auxiliary Video Memory
uint8_t * RAM = Apple2_64K_RAM; // Pointer to the main memory so we can use this from Swift
//uint8_t * AUX_VID_RAM = Apple2_VID_AUX; // Pointer to Auxiliary Video Memory
uint8_t * const AUX = Apple2_64K_AUX; // Pointer to the auxiliary memory so we can use this from Swift
uint8_t * const RAM = Apple2_64K_RAM; // Pointer to the main memory so we can use this from Swift
#define DEF_RAM_PAGE(mem,pg) \
@ -371,7 +371,7 @@ void resetMemory() {
MEMcfg.is80STORE = 0;
// Aux Video Memory
memset( Apple2_VID_AUX, 0xFF | 0x80, sizeof(Apple2_VID_AUX) );
memset( AUX, 0, sizeof(Apple2_64K_AUX) );
// 64K Main Memory Area
memset( RAM, 0, sizeof(Apple2_64K_RAM) );
// 16K Memory Expansion
@ -384,8 +384,8 @@ void resetMemory() {
void textPageSelect() {
if ( MEMcfg.is80STORE && videoMode.page2 ) {
SWITCH_VIDEO_RAM( RAM_PG_RD_TBL, 0x04, Apple2_VID_AUX, 0x00)
SWITCH_VIDEO_RAM( RAM_PG_WR_TBL, 0x04, Apple2_VID_AUX, 0x00)
SWITCH_VIDEO_RAM( RAM_PG_RD_TBL, 0x04, Apple2_64K_AUX, 0x04)
SWITCH_VIDEO_RAM( RAM_PG_WR_TBL, 0x04, Apple2_64K_AUX, 0x04)
}
else {
SWITCH_VIDEO_RAM( RAM_PG_RD_TBL, 0x04, Apple2_64K_RAM, 0x04)