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Info con Smartport Disk

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Ivan Izaguirre 2019-10-27 19:18:51 +01:00 committed by Iván Izaguirre
parent 5a3dcc60bb
commit 9f2a026fa3
1 changed files with 4 additions and 0 deletions
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4
cardHardDisk.go
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@ -5,6 +5,9 @@ import "fmt"
/*
To implement a hard drive we just have to support boot from #PR7 and the PRODOS expextations.
See Beneath Prodos, section 6-6, 7-13 and 5-8. (http://www.apple-iigs.info/doc/fichiers/beneathprodos.pdf)
See:
https://prodos8.com/docs/technote/21/
*/
type cardHardDisk struct {
@ -23,6 +26,7 @@ func buildHardDiskRom(slot int) []uint8 {
0xa9, 0x00, // LDA #$20
0xa9, 0x03, // LDA #$20
0xa9, 0x3c, // LDA #$3c
// Alternate: 0xa9, 0x00, // LDA #$00 ; Not a Smartport device, but won't boot on ii+ ROM
// Boot code: SS will load block 0 in address $0800. The jump there.
// Note: on execution the first block expects $42 to $47 to have